55665931200 has 672 divisors, whose sum is σ = 208992337920. Its totient is φ = 12848640000.

The previous prime is 55665931193. The next prime is 55665931229. The reversal of 55665931200 is 213956655.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 116212561 + ... + 116213039.

Almost surely, 2^55665931200 is an apocalyptic number.

55665931200 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 55665931200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (104496168960).

55665931200 is an abundant number, since it is smaller than the sum of its proper divisors (153326406720).

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

55665931200 is a wasteful number, since it uses less digits than its factorization.

55665931200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 617 (or 602 counting only the distinct ones).

The product of its (nonzero) digits is 243000, while the sum is 42.

The spelling of 55665931200 in words is "fifty-five billion, six hundred sixty-five million, nine hundred thirty-one thousand, two hundred".