18478817280 has 1344 divisors, whose sum is σ = 86061864960. Its totient is φ = 3715891200.

The previous prime is 18478817243. The next prime is 18478817303. The reversal of 18478817280 is 8271887481.

It is a happy number.

18478817280 is a `hidden beast` number, since 18 + 478 + 81 + 7 + 2 + 80 = 666.

It is a tau number, because it is divible by the number of its divisors (1344).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 596090865 + ... + 596090895.

Almost surely, 2^18478817280 is an apocalyptic number.

18478817280 is a gapful number since it is divisible by the number (10) 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 18478817280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43030932480).

18478817280 is an abundant number, since it is smaller than the sum of its proper divisors (67583047680).

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

18478817280 is a wasteful number, since it uses less digits than its factorization.

18478817280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96 (or 59 counting only the distinct ones).

The product of its (nonzero) digits is 1605632, while the sum is 54.

The spelling of 18478817280 in words is "eighteen billion, four hundred seventy-eight million, eight hundred seventeen thousand, two hundred eighty".