550651666560 has 128 divisors (see below), whose sum is σ = 1755439992000. Its totient is φ = 146820550656.

The previous prime is 550651666547. The next prime is 550651666577. The reversal of 550651666560 is 65666156055.

It is a tau number, because it is divible by the number of its divisors (128).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19006966 + ... + 19035914.

Almost surely, 2^550651666560 is an apocalyptic number.

It is an amenable number.

550651666560 is an abundant number, since it is smaller than the sum of its proper divisors (1204788325440).

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

550651666560 is a wasteful number, since it uses less digits than its factorization.

550651666560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38878 (or 38866 counting only the distinct ones).

The product of its (nonzero) digits is 4860000, while the sum is 51.

The spelling of 550651666560 in words is "five hundred fifty billion, six hundred fifty-one million, six hundred sixty-six thousand, five hundred sixty".