550605639955 has 24 divisors (see below), whose sum is σ = 778329673920. Its totient is φ = 372778922880.

The previous prime is 550605639943. The next prime is 550605639977. The reversal of 550605639955 is 559936506055.

It is a happy number.

It is not a de Polignac number, because 550605639955 - 2²⁹ = 550068769043 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 550605639955.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14204506 + ... + 14243215.

It is an arithmetic number, because the mean of its divisors is an integer number (32430403080).

Almost surely, 2^550605639955 is an apocalyptic number.

550605639955 is a deficient number, since it is larger than the sum of its proper divisors (227724033965).

550605639955 is a wasteful number, since it uses less digits than its factorization.

550605639955 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28447819 (or 28447812 counting only the distinct ones).

The product of its (nonzero) digits is 27337500, while the sum is 58.

The spelling of 550605639955 in words is "five hundred fifty billion, six hundred five million, six hundred thirty-nine thousand, nine hundred fifty-five".