555865457972 has 72 divisors (see below), whose sum is σ = 1154812111488. Its totient is φ = 231375859200.

The previous prime is 555865457933. The next prime is 555865458007. The reversal of 555865457972 is 279754568555.

It is a Harshad number since it is a multiple of its sum of digits (68).

It is a congruent number.

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, 752597 + ... + 1295427.

It is an arithmetic number, because the mean of its divisors is an integer number (16039057104).

Almost surely, 2^555865457972 is an apocalyptic number.

It is an amenable number.

555865457972 is an abundant number, since it is smaller than the sum of its proper divisors (598946653516).

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

555865457972 is a wasteful number, since it uses less digits than its factorization.

555865457972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 542937 (or 542898 counting only the distinct ones).

The product of its digits is 529200000, while the sum is 68.

The spelling of 555865457972 in words is "five hundred fifty-five billion, eight hundred sixty-five million, four hundred fifty-seven thousand, nine hundred seventy-two".