8860642155 has 48 divisors (see below), whose sum is σ = 15918576960. Its totient is φ = 4555678464.

The previous prime is 8860642139. The next prime is 8860642157. The reversal of 8860642155 is 5512460688.

It is not a de Polignac number, because 8860642155 - 2⁴ = 8860642139 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 8860642155.

It is not an unprimeable number, because it can be changed into a prime (8860642157) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 157074 + ... + 205896.

It is an arithmetic number, because the mean of its divisors is an integer number (331637020).

Almost surely, 2^8860642155 is an apocalyptic number.

8860642155 is a deficient number, since it is larger than the sum of its proper divisors (7057934805).

8860642155 is a wasteful number, since it uses less digits than its factorization.

8860642155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48980 (or 48977 counting only the distinct ones).

The product of its (nonzero) digits is 460800, while the sum is 45.

The square root of 8860642155 is about 94130.9840328890. The cubic root of 8860642155 is about 2069.2917797046.

The spelling of 8860642155 in words is "eight billion, eight hundred sixty million, six hundred forty-two thousand, one hundred fifty-five".