13544622972 has 36 divisors (see below), whose sum is σ = 34883798040. Its totient is φ = 4429687392.

The previous prime is 13544622961. The next prime is 13544622977. The reversal of 13544622972 is 27922644531.

13544622972 is a `hidden beast` number, since 1 + 354 + 4 + 6 + 2 + 297 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×13544622972² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13544622977) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3547522 + ... + 3551337.

It is an arithmetic number, because the mean of its divisors is an integer number (968994390).

Almost surely, 2^13544622972 is an apocalyptic number.

13544622972 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

13544622972 is an abundant number, since it is smaller than the sum of its proper divisors (21339175068).

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

13544622972 is a wasteful number, since it uses less digits than its factorization.

13544622972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7098922 (or 7098917 counting only the distinct ones).

The product of its digits is 725760, while the sum is 45.

The spelling of 13544622972 in words is "thirteen billion, five hundred forty-four million, six hundred twenty-two thousand, nine hundred seventy-two".