655572157642 has 16 divisors (see below), whose sum is σ = 996786340200. Its totient is φ = 323334174400.

The previous prime is 655572157567. The next prime is 655572157679. The reversal of 655572157642 is 246751275556.

It can be written as a sum of positive squares in 4 ways, for example, as 643317889041 + 12254268601 = 802071^2 + 110699^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5978017 + ... + 6086692.

Almost surely, 2^655572157642 is an apocalyptic number.

655572157642 is a deficient number, since it is larger than the sum of its proper divisors (341214182558).

655572157642 is a wasteful number, since it uses less digits than its factorization.

655572157642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12065081.

The product of its digits is 17640000, while the sum is 55.

The spelling of 655572157642 in words is "six hundred fifty-five billion, five hundred seventy-two million, one hundred fifty-seven thousand, six hundred forty-two".