90327715957 has 4 divisors (see below), whose sum is σ = 90366804256. Its totient is φ = 90288627660.

The previous prime is 90327715939. The next prime is 90327715981. The reversal of 90327715957 is 75951772309.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 75951772309 = 7 ⋅10850253187.

It is a cyclic number.

It is not a de Polignac number, because 90327715957 - 2²³ = 90319327349 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 90327715898 and 90327715907.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90327715987) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 19540683 + ... + 19545304.

It is an arithmetic number, because the mean of its divisors is an integer number (22591701064).

Almost surely, 2^90327715957 is an apocalyptic number.

It is an amenable number.

90327715957 is a deficient number, since it is larger than the sum of its proper divisors (39088299).

90327715957 is a wasteful number, since it uses less digits than its factorization.

90327715957 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39088298.

The product of its (nonzero) digits is 4167450, while the sum is 55.

The spelling of 90327715957 in words is "ninety billion, three hundred twenty-seven million, seven hundred fifteen thousand, nine hundred fifty-seven".