90316253991 has 16 divisors (see below), whose sum is σ = 127511394048. Its totient is φ = 56666313600.

The previous prime is 90316253987. The next prime is 90316253999. The reversal of 90316253991 is 19935261309.

It is not a de Polignac number, because 90316253991 - 2² = 90316253987 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 90316253991.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90316253999) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1905976 + ... + 1952786.

It is an arithmetic number, because the mean of its divisors is an integer number (7969462128).

Almost surely, 2^90316253991 is an apocalyptic number.

90316253991 is a deficient number, since it is larger than the sum of its proper divisors (37195140057).

90316253991 is a wasteful number, since it uses less digits than its factorization.

90316253991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84662.

The product of its (nonzero) digits is 393660, while the sum is 48.

The spelling of 90316253991 in words is "ninety billion, three hundred sixteen million, two hundred fifty-three thousand, nine hundred ninety-one".