55987996262400 has 612 divisors, whose sum is σ = 207989538202992. Its totient is φ = 14930026168320.

The previous prime is 55987996262389. The next prime is 55987996262423. The reversal of 55987996262400 is 426269978955.

55987996262400 is a `hidden beast` number, since 5 + 5 + 9 + 8 + 79 + 96 + 2 + 62 + 400 = 666.

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

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 398060887 + ... + 398201513.

Almost surely, 2^{55987996262400} is an apocalyptic number.

55987996262400 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 55987996262400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (103994769101496).

55987996262400 is an abundant number, since it is smaller than the sum of its proper divisors (152001541940592).

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

55987996262400 is an frugal number, since it uses more digits than its factorization.

55987996262400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140684 (or 140637 counting only the distinct ones).

The product of its (nonzero) digits is 587865600, while the sum is 72.

The spelling of 55987996262400 in words is "fifty-five trillion, nine hundred eighty-seven billion, nine hundred ninety-six million, two hundred sixty-two thousand, four hundred".