215605223564 has 12 divisors (see below), whose sum is σ = 380648160984. Its totient is φ = 106848606144.

The previous prime is 215605223501. The next prime is 215605223573. The reversal of 215605223564 is 465322506512.

It is a super-2 number, since 2×215605223564² (a number of 23 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (41) coincides with the sum of the digits of its distinct prime factors.

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, 238500902 + ... + 238501805.

It is an arithmetic number, because the mean of its divisors is an integer number (31720680082).

Almost surely, 2^215605223564 is an apocalyptic number.

It is an amenable number.

215605223564 is a deficient number, since it is larger than the sum of its proper divisors (165042937420).

215605223564 is a wasteful number, since it uses less digits than its factorization.

215605223564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 477002824 (or 477002822 counting only the distinct ones).

The product of its (nonzero) digits is 432000, while the sum is 41.

The spelling of 215605223564 in words is "two hundred fifteen billion, six hundred five million, two hundred twenty-three thousand, five hundred sixty-four".