55797377932800 has 2880 divisors, whose sum is σ = 244002034298880. Its totient is φ = 11902742691840.

The previous prime is 55797377932781. The next prime is 55797377932837. The reversal of 55797377932800 is 823977379755.

55797377932800 is a `hidden beast` number, since 5 + 5 + 7 + 97 + 377 + 93 + 2 + 80 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (2880).

It is a super-2 number, since 2×55797377932800² (a number of 28 digits) contains 22 as substring.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 287 ways as a sum of consecutive naturals, for example, 165570854232 + ... + 165570854568.

It is an arithmetic number, because the mean of its divisors is an integer number (84722928576).

Almost surely, 2^{55797377932800} is an apocalyptic number.

55797377932800 is a gapful number since it is divisible by the number (50) 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 55797377932800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (122001017149440).

55797377932800 is an abundant number, since it is smaller than the sum of its proper divisors (188204656366080).

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

55797377932800 is a wasteful number, since it uses less digits than its factorization.

55797377932800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 593 (or 569 counting only the distinct ones).

The product of its (nonzero) digits is 700131600, while the sum is 72.

The spelling of 55797377932800 in words is "fifty-five trillion, seven hundred ninety-seven billion, three hundred seventy-seven million, nine hundred thirty-two thousand, eight hundred".