55643632315164 has 60 divisors (see below), whose sum is σ = 145465044903024. Its totient is φ = 18547673590656.

The previous prime is 55643632315163. The next prime is 55643632315171. The reversal of 55643632315164 is 46151323634655.

55643632315164 is a `hidden beast` number, since 5 + 5 + 6 + 43 + 63 + 23 + 1 + 516 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a self number, because there is not a number n which added to its sum of digits gives 55643632315164.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55643632315163) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 30161857 + ... + 31953479.

Almost surely, 2^{55643632315164} is an apocalyptic number.

55643632315164 is a gapful number since it is divisible by the number (54) formed by its first and last digit.

It is an amenable number.

55643632315164 is an abundant number, since it is smaller than the sum of its proper divisors (89821412587860).

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

55643632315164 is a wasteful number, since it uses less digits than its factorization.

55643632315164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1887496 (or 1887485 counting only the distinct ones).

The product of its digits is 23328000, while the sum is 54.

The spelling of 55643632315164 in words is "fifty-five trillion, six hundred forty-three billion, six hundred thirty-two million, three hundred fifteen thousand, one hundred sixty-four".