155572252868 has 12 divisors (see below), whose sum is σ = 272272626192. Its totient is φ = 77780073960.

The previous prime is 155572252853. The next prime is 155572252873. The reversal of 155572252868 is 868252275551.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1455038 + ... + 1558293.

It is an arithmetic number, because the mean of its divisors is an integer number (22689385516).

Almost surely, 2^155572252868 is an apocalyptic number.

It is an amenable number.

155572252868 is a deficient number, since it is larger than the sum of its proper divisors (116700373324).

155572252868 is a wasteful number, since it uses less digits than its factorization.

155572252868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3026242 (or 3026240 counting only the distinct ones).

The product of its digits is 13440000, while the sum is 56.

The spelling of 155572252868 in words is "one hundred fifty-five billion, five hundred seventy-two million, two hundred fifty-two thousand, eight hundred sixty-eight".