90931376623 has 2 divisors, whose sum is σ = 90931376624. Its totient is φ = 90931376622.

The previous prime is 90931376581. The next prime is 90931376639. The reversal of 90931376623 is 32667313909.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 90931376623 - 2⁹ = 90931376111 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (90931373623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45465688311 + 45465688312.

It is an arithmetic number, because the mean of its divisors is an integer number (45465688312).

Almost surely, 2^90931376623 is an apocalyptic number.

90931376623 is a deficient number, since it is larger than the sum of its proper divisors (1).

90931376623 is an equidigital number, since it uses as much as digits as its factorization.

90931376623 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1102248, while the sum is 49.

The spelling of 90931376623 in words is "ninety billion, nine hundred thirty-one million, three hundred seventy-six thousand, six hundred twenty-three".