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80385389844480 = 21132572320392657
BaseRepresentation
bin10010010001110000101110…
…100110110101100000000000
3101112121202202000211121000200
4102101300232212311200000
541014013234300010410
6442544312134245200
722634436616545630
oct2221605646654000
9345552660747020
1080385389844480
1123682285a19446
1290232884b6800
1335b140464b506
1415bc9606126c0
1594601d8773c0
hex491c2e9b5800

80385389844480 has 1152 divisors, whose sum is σ = 332533100390400. Its totient is φ = 17559711645696.

The previous prime is 80385389844427. The next prime is 80385389844511. The reversal of 80385389844480 is 8444898358308.

80385389844480 is a `hidden beast` number, since 8 + 0 + 3 + 8 + 53 + 8 + 98 + 4 + 4 + 480 = 666.

It is a tau number, because it is divible by the number of its divisors (1152).

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a junction number, because it is equal to n+sod(n) for n = 80385389844399 and 80385389844408.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 30254191312 + ... + 30254193968.

It is an arithmetic number, because the mean of its divisors is an integer number (288657205200).

Almost surely, 280385389844480 is an apocalyptic number.

80385389844480 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 80385389844480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (166266550195200).

80385389844480 is an abundant number, since it is smaller than the sum of its proper divisors (252147710545920).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

80385389844480 is a wasteful number, since it uses less digits than its factorization.

80385389844480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4759 (or 4736 counting only the distinct ones).

The product of its (nonzero) digits is 849346560, while the sum is 72.

The spelling of 80385389844480 in words is "eighty trillion, three hundred eighty-five billion, three hundred eighty-nine million, eight hundred forty-four thousand, four hundred eighty".