55931021894400 has 216 divisors, whose sum is σ = 186037450174464. Its totient is φ = 14797498060800.

The previous prime is 55931021894399. The next prime is 55931021894411. The reversal of 55931021894400 is 449812013955.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9030396 + ... + 13907195.

Almost surely, 2^{55931021894400} is an apocalyptic number.

55931021894400 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

55931021894400 is an abundant number, since it is smaller than the sum of its proper divisors (130106428280064).

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

55931021894400 is a wasteful number, since it uses less digits than its factorization.

55931021894400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22937747 (or 22937728 counting only the distinct ones).

The product of its (nonzero) digits is 1555200, while the sum is 51.

The spelling of 55931021894400 in words is "fifty-five trillion, nine hundred thirty-one billion, twenty-one million, eight hundred ninety-four thousand, four hundred".