90931500893779 has 16 divisors (see below), whose sum is σ = 112770011692800. Its totient is φ = 71396598293280.

The previous prime is 90931500893759. The next prime is 90931500893789. The reversal of 90931500893779 is 97739800513909.

It is not a de Polignac number, because 90931500893779 - 2¹³ = 90931500885587 is a prime.

It is not an unprimeable number, because it can be changed into a prime (90931500893719) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3813908929 + ... + 3813932770.

It is an arithmetic number, because the mean of its divisors is an integer number (7048125730800).

Almost surely, 2^{90931500893779} is an apocalyptic number.

90931500893779 is a deficient number, since it is larger than the sum of its proper divisors (21838510799021).

90931500893779 is a wasteful number, since it uses less digits than its factorization.

90931500893779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7627841850.

The product of its (nonzero) digits is 115736040, while the sum is 70.

The spelling of 90931500893779 in words is "ninety trillion, nine hundred thirty-one billion, five hundred million, eight hundred ninety-three thousand, seven hundred seventy-nine".