549564155136 has 90 divisors (see below), whose sum is σ = 1638700933562. Its totient is φ = 183188044800.

The previous prime is 549564155113. The next prime is 549564155143. The reversal of 549564155136 is 631551465945.

549564155136 is a `hidden beast` number, since 5 + 4 + 9 + 56 + 4 + 1 + 551 + 36 = 666.

It can be written as a sum of positive squares in only one way, i.e., 518192660736 + 31371494400 = 719856^2 + 177120^2 .

It is a super-2 number, since 2×549564155136² (a number of 24 digits) contains 22 as substring.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 13230715 + ... + 13272186.

Almost surely, 2^549564155136 is an apocalyptic number.

It is an amenable number.

549564155136 is an abundant number, since it is smaller than the sum of its proper divisors (1089136778426).

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

549564155136 is an equidigital number, since it uses as much as digits as its factorization.

549564155136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26502929 (or 26502906 counting only the distinct ones).

The product of its digits is 9720000, while the sum is 54.

The spelling of 549564155136 in words is "five hundred forty-nine billion, five hundred sixty-four million, one hundred fifty-five thousand, one hundred thirty-six".