22151320538 has 16 divisors (see below), whose sum is σ = 33626456640. Its totient is φ = 10942695456.

The previous prime is 22151320507. The next prime is 22151320553. The reversal of 22151320538 is 83502315122.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 184181 + ... + 279687.

It is an arithmetic number, because the mean of its divisors is an integer number (2101653540).

Almost surely, 2^22151320538 is an apocalyptic number.

22151320538 is a deficient number, since it is larger than the sum of its proper divisors (11475136102).

22151320538 is a wasteful number, since it uses less digits than its factorization.

22151320538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96901.

The product of its (nonzero) digits is 14400, while the sum is 32.

The spelling of 22151320538 in words is "twenty-two billion, one hundred fifty-one million, three hundred twenty thousand, five hundred thirty-eight".