90165674831 has 2 divisors, whose sum is σ = 90165674832. Its totient is φ = 90165674830.

The previous prime is 90165674801. The next prime is 90165674849. The reversal of 90165674831 is 13847656109.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 90165674831 - 2¹⁴ = 90165658447 is a prime.

It is a super-2 number, since 2×90165674831² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 90165674831.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (90165674801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45082837415 + 45082837416.

It is an arithmetic number, because the mean of its divisors is an integer number (45082837416).

Almost surely, 2^90165674831 is an apocalyptic number.

90165674831 is a deficient number, since it is larger than the sum of its proper divisors (1).

90165674831 is an equidigital number, since it uses as much as digits as its factorization.

90165674831 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1088640, while the sum is 50.

The spelling of 90165674831 in words is "ninety billion, one hundred sixty-five million, six hundred seventy-four thousand, eight hundred thirty-one".