551436077990 has 96 divisors (see below), whose sum is σ = 1166671232064. Its totient is φ = 187096331520.

The previous prime is 551436077989. The next prime is 551436077993. The reversal of 551436077990 is 99770634155.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (551436077993) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 94729280 + ... + 94735100.

It is an arithmetic number, because the mean of its divisors is an integer number (12152825334).

Almost surely, 2^551436077990 is an apocalyptic number.

551436077990 is an abundant number, since it is smaller than the sum of its proper divisors (615235154074).

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

551436077990 is a wasteful number, since it uses less digits than its factorization.

551436077990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7822 (or 7815 counting only the distinct ones).

The product of its (nonzero) digits is 7144200, while the sum is 56.

The spelling of 551436077990 in words is "five hundred fifty-one billion, four hundred thirty-six million, seventy-seven thousand, nine hundred ninety".