55018555812 has 72 divisors (see below), whose sum is σ = 160642433952. Its totient is φ = 15691564800.

The previous prime is 55018555811. The next prime is 55018555819. The reversal of 55018555812 is 21855581055.

55018555812 is a `hidden beast` number, since 5 + 5 + 0 + 1 + 85 + 558 + 12 = 666.

55018555812 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (55018555811) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4079614 + ... + 4093077.

It is an arithmetic number, because the mean of its divisors is an integer number (2231144916).

Almost surely, 2^55018555812 is an apocalyptic number.

It is an amenable number.

55018555812 is an abundant number, since it is smaller than the sum of its proper divisors (105623878140).

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

55018555812 is a wasteful number, since it uses less digits than its factorization.

55018555812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8172729 (or 8172724 counting only the distinct ones).

The product of its (nonzero) digits is 400000, while the sum is 45.

The spelling of 55018555812 in words is "fifty-five billion, eighteen million, five hundred fifty-five thousand, eight hundred twelve".