550161551664 has 60 divisors (see below), whose sum is σ = 1554636702736. Its totient is φ = 181606720896.

The previous prime is 550161551633. The next prime is 550161551701. The reversal of 550161551664 is 466155161055.

550161551664 is a `hidden beast` number, since 5 + 50 + 16 + 15 + 516 + 64 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18531607 + ... + 18561270.

Almost surely, 2^550161551664 is an apocalyptic number.

It is an amenable number.

550161551664 is an abundant number, since it is smaller than the sum of its proper divisors (1004475151072).

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

550161551664 is a wasteful number, since it uses less digits than its factorization.

550161551664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37092994 (or 37092985 counting only the distinct ones).

The product of its (nonzero) digits is 540000, while the sum is 45.

The spelling of 550161551664 in words is "five hundred fifty billion, one hundred sixty-one million, five hundred fifty-one thousand, six hundred sixty-four".