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80770222080 = 21132519193239
BaseRepresentation
bin100101100111001000…
…1111100100000000000
321201111000102102001200
41023032101330200000
52310404134101310
6101034430101200
75556363363012
oct1131621744000
9251430372050
1080770222080
1131288759359
12137a194a800
13780288cb22
143ca31921b2
15217ae129c0
hex12ce47c800

80770222080 has 576 divisors, whose sum is σ = 297434592000. Its totient is φ = 20214448128.

The previous prime is 80770222067. The next prime is 80770222081. The reversal of 80770222080 is 8022207708.

It is a tau number, because it is divible by the number of its divisors (576).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (80770222081) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 337950601 + ... + 337950839.

It is an arithmetic number, because the mean of its divisors is an integer number (516379500).

Almost surely, 280770222080 is an apocalyptic number.

80770222080 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 80770222080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (148717296000).

80770222080 is an abundant number, since it is smaller than the sum of its proper divisors (216664369920).

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

80770222080 is a wasteful number, since it uses less digits than its factorization.

80770222080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 484 (or 461 counting only the distinct ones).

The product of its (nonzero) digits is 25088, while the sum is 36.

Adding to 80770222080 its reverse (8022207708), we get a palindrome (88792429788).

The spelling of 80770222080 in words is "eighty billion, seven hundred seventy million, two hundred twenty-two thousand, eighty".