55210566664 has 32 divisors (see below), whose sum is σ = 119573690400. Its totient is φ = 23619493120.

The previous prime is 55210566661. The next prime is 55210566673. The reversal of 55210566664 is 46666501255.

It is not an unprimeable number, because it can be changed into a prime (55210566661) 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, 18451234 + ... + 18454225.

It is an arithmetic number, because the mean of its divisors is an integer number (3736677825).

Almost surely, 2^55210566664 is an apocalyptic number.

It is an amenable number.

55210566664 is an abundant number, since it is smaller than the sum of its proper divisors (64363123736).

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

55210566664 is a wasteful number, since it uses less digits than its factorization.

55210566664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36905493 (or 36905489 counting only the distinct ones).

The product of its (nonzero) digits is 1296000, while the sum is 46.

The spelling of 55210566664 in words is "fifty-five billion, two hundred ten million, five hundred sixty-six thousand, six hundred sixty-four".