55133657472 has 64 divisors (see below), whose sum is σ = 147517887600. Its totient is φ = 18243723264.

The previous prime is 55133657431. The next prime is 55133657519. The reversal of 55133657472 is 27475633155.

It is a tau number, because it is divible by the number of its divisors (64).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 471397 + ... + 576612.

Almost surely, 2^55133657472 is an apocalyptic number.

It is an amenable number.

55133657472 is an abundant number, since it is smaller than the sum of its proper divisors (92384230128).

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

55133657472 is a wasteful number, since it uses less digits than its factorization.

55133657472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1048163 (or 1048151 counting only the distinct ones).

The product of its digits is 2646000, while the sum is 48.

The spelling of 55133657472 in words is "fifty-five billion, one hundred thirty-three million, six hundred fifty-seven thousand, four hundred seventy-two".