55163232504 has 96 divisors (see below), whose sum is σ = 149920542720. Its totient is φ = 18323869248.

The previous prime is 55163232491. The next prime is 55163232517. The reversal of 55163232504 is 40523236155.

55163232504 is a `hidden beast` number, since 551 + 63 + 23 + 25 + 0 + 4 = 666.

It is an interprime number because it is at equal distance from previous prime (55163232491) and next prime (55163232517).

It is a super-2 number, since 2×55163232504² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 38764737 + ... + 38766159.

It is an arithmetic number, because the mean of its divisors is an integer number (1561672320).

Almost surely, 2^55163232504 is an apocalyptic number.

It is an amenable number.

55163232504 is an abundant number, since it is smaller than the sum of its proper divisors (94757310216).

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

55163232504 is a wasteful number, since it uses less digits than its factorization.

55163232504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2929 (or 2922 counting only the distinct ones).

The product of its (nonzero) digits is 108000, while the sum is 36.

Adding to 55163232504 its reverse (40523236155), we get a palindrome (95686468659).

The spelling of 55163232504 in words is "fifty-five billion, one hundred sixty-three million, two hundred thirty-two thousand, five hundred four".