22155402504 has 32 divisors (see below), whose sum is σ = 58303692000. Its totient is φ = 6996442752.

The previous prime is 22155402499. The next prime is 22155402509. The reversal of 22155402504 is 40520455122.

It is an interprime number because it is at equal distance from previous prime (22155402499) and next prime (22155402509).

It is a super-2 number, since 2×22155402504² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (22155402509) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24292749 + ... + 24293660.

It is an arithmetic number, because the mean of its divisors is an integer number (1821990375).

Almost surely, 2^22155402504 is an apocalyptic number.

22155402504 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

22155402504 is an abundant number, since it is smaller than the sum of its proper divisors (36148289496).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22155402504 is a wasteful number, since it uses less digits than its factorization.

22155402504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48586437 (or 48586433 counting only the distinct ones).

The product of its (nonzero) digits is 16000, while the sum is 30.

Adding to 22155402504 its reverse (40520455122), we get a palindrome (62675857626).

The spelling of 22155402504 in words is "twenty-two billion, one hundred fifty-five million, four hundred two thousand, five hundred four".