22155551045215 has 32 divisors (see below), whose sum is σ = 30609956127744. Its totient is φ = 15079802400000.

The previous prime is 22155551045209. The next prime is 22155551045227. The reversal of 22155551045215 is 51254015555122.

It is a de Polignac number, because none of the positive numbers 2^k-22155551045215 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 43510840 + ... + 44017090.

It is an arithmetic number, because the mean of its divisors is an integer number (956561128992).

Almost surely, 2^{22155551045215} is an apocalyptic number.

22155551045215 is a deficient number, since it is larger than the sum of its proper divisors (8454405082529).

22155551045215 is a wasteful number, since it uses less digits than its factorization.

22155551045215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 515527.

The product of its (nonzero) digits is 500000, while the sum is 43.

The spelling of 22155551045215 in words is "twenty-two trillion, one hundred fifty-five billion, five hundred fifty-one million, forty-five thousand, two hundred fifteen".