55997802630 has 1024 divisors, whose sum is σ = 214990848000. Its totient is φ = 10003046400.

The previous prime is 55997802617. The next prime is 55997802659. The reversal of 55997802630 is 3620879955.

55997802630 is a `hidden beast` number, since 559 + 9 + 7 + 80 + 2 + 6 + 3 + 0 = 666.

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 polite number, since it can be written in 511 ways as a sum of consecutive naturals, for example, 208170136 + ... + 208170404.

It is an arithmetic number, because the mean of its divisors is an integer number (209952000).

Almost surely, 2^55997802630 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55997802630, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (107495424000).

55997802630 is an abundant number, since it is smaller than the sum of its proper divisors (158993045370).

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

55997802630 is a wasteful number, since it uses less digits than its factorization.

55997802630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 370 (or 364 counting only the distinct ones).

The product of its (nonzero) digits is 4082400, while the sum is 54.

The spelling of 55997802630 in words is "fifty-five billion, nine hundred ninety-seven million, eight hundred two thousand, six hundred thirty".