13551464556 has 72 divisors (see below), whose sum is σ = 39159722784. Its totient is φ = 3870754560.

The previous prime is 13551464533. The next prime is 13551464561. The reversal of 13551464556 is 65546415531.

13551464556 is a `hidden beast` number, since 1 + 3 + 5 + 51 + 46 + 4 + 556 = 666.

It is a super-2 number, since 2×13551464556² (a number of 21 digits) contains 22 as substring.

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 23 ways as a sum of consecutive naturals, for example, 1416766 + ... + 1426298.

Almost surely, 2^13551464556 is an apocalyptic number.

It is an amenable number.

13551464556 is an abundant number, since it is smaller than the sum of its proper divisors (25608258228).

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

13551464556 is a wasteful number, since it uses less digits than its factorization.

13551464556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15191 (or 15186 counting only the distinct ones).

The product of its digits is 1080000, while the sum is 45.

The spelling of 13551464556 in words is "thirteen billion, five hundred fifty-one million, four hundred sixty-four thousand, five hundred fifty-six".