550072989858 has 32 divisors (see below), whose sum is σ = 1257922313856. Its totient is φ = 157087133568.

The previous prime is 550072989847. The next prime is 550072989863. The reversal of 550072989858 is 858989270055.

It is a Curzon number.

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, 3103491 + ... + 3275942.

It is an arithmetic number, because the mean of its divisors is an integer number (39310072308).

Almost surely, 2^550072989858 is an apocalyptic number.

550072989858 is an abundant number, since it is smaller than the sum of its proper divisors (707849323998).

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

550072989858 is a wasteful number, since it uses less digits than its factorization.

550072989858 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6381498.

The product of its (nonzero) digits is 72576000, while the sum is 66.

The spelling of 550072989858 in words is "five hundred fifty billion, seventy-two million, nine hundred eighty-nine thousand, eight hundred fifty-eight".