55005004992 has 56 divisors (see below), whose sum is σ = 166324662016. Its totient is φ = 15715715328.

The previous prime is 55005004991. The next prime is 55005005017. The reversal of 55005004992 is 29940050055.

It is a tau number, because it is divible by the number of its divisors (56).

It is a self number, because there is not a number n which added to its sum of digits gives 55005004992.

It is not an unprimeable number, because it can be changed into a prime (55005004991) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20461828 + ... + 20464515.

Almost surely, 2^55005004992 is an apocalyptic number.

It is an amenable number.

55005004992 is an abundant number, since it is smaller than the sum of its proper divisors (111319657024).

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

55005004992 is a wasteful number, since it uses less digits than its factorization.

55005004992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40926365 (or 40926355 counting only the distinct ones).

The product of its (nonzero) digits is 81000, while the sum is 39.

The spelling of 55005004992 in words is "fifty-five billion, five million, four thousand, nine hundred ninety-two".