79890532590 has 32 divisors (see below), whose sum is σ = 209167940736. Its totient is φ = 19367401760.

The previous prime is 79890532577. The next prime is 79890532607. The reversal of 79890532590 is 9523509897.

It is a self number, because there is not a number n which added to its sum of digits gives 79890532590.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 121045932 + ... + 121046591.

It is an arithmetic number, because the mean of its divisors is an integer number (6536498148).

Almost surely, 2^79890532590 is an apocalyptic number.

79890532590 is an abundant number, since it is smaller than the sum of its proper divisors (129277408146).

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

79890532590 is a wasteful number, since it uses less digits than its factorization.

79890532590 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 242092544.

The product of its (nonzero) digits is 6123600, while the sum is 57.

The spelling of 79890532590 in words is "seventy-nine billion, eight hundred ninety million, five hundred thirty-two thousand, five hundred ninety".