18215012896 has 24 divisors (see below), whose sum is σ = 35864144064. Its totient is φ = 9106658880.

The previous prime is 18215012869. The next prime is 18215012923. The reversal of 18215012896 is 69821051281.

It is an interprime number because it is at equal distance from previous prime (18215012869) and next prime (18215012923).

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, 460461 + ... + 498451.

It is an arithmetic number, because the mean of its divisors is an integer number (1494339336).

Almost surely, 2^18215012896 is an apocalyptic number.

18215012896 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

18215012896 is a deficient number, since it is larger than the sum of its proper divisors (17649131168).

18215012896 is a wasteful number, since it uses less digits than its factorization.

18215012896 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52984 (or 52976 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 43.

The spelling of 18215012896 in words is "eighteen billion, two hundred fifteen million, twelve thousand, eight hundred ninety-six".