55120452564 has 12 divisors (see below), whose sum is σ = 128614389344. Its totient is φ = 18373484184.

The previous prime is 55120452559. The next prime is 55120452649. The reversal of 55120452564 is 46525402155.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2296685512 + ... + 2296685535.

Almost surely, 2^55120452564 is an apocalyptic number.

It is an amenable number.

55120452564 is an abundant number, since it is smaller than the sum of its proper divisors (73493936780).

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

55120452564 is a wasteful number, since it uses less digits than its factorization.

55120452564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4593371054 (or 4593371052 counting only the distinct ones).

The product of its (nonzero) digits is 240000, while the sum is 39.

The spelling of 55120452564 in words is "fifty-five billion, one hundred twenty million, four hundred fifty-two thousand, five hundred sixty-four".