22156215458 has 16 divisors (see below), whose sum is σ = 36758130360. Its totient is φ = 9949568256.

The previous prime is 22156215427. The next prime is 22156215463. The reversal of 22156215458 is 85451265122.

It can be written as a sum of positive squares in 4 ways, for example, as 13845522889 + 8310692569 = 117667^2 + 91163^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11514743 + ... + 11516666.

Almost surely, 2^22156215458 is an apocalyptic number.

22156215458 is a deficient number, since it is larger than the sum of its proper divisors (14601914902).

22156215458 is a wasteful number, since it uses less digits than its factorization.

22156215458 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23031461.

The product of its digits is 192000, while the sum is 41.

The spelling of 22156215458 in words is "twenty-two billion, one hundred fifty-six million, two hundred fifteen thousand, four hundred fifty-eight".