90716393137 has 4 divisors (see below), whose sum is σ = 90743291380. Its totient is φ = 90689494896.

The previous prime is 90716393111. The next prime is 90716393167. The reversal of 90716393137 is 73139361709.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 89482346496 + 1234046641 = 299136^2 + 35129^2 .

It is a cyclic number.

It is not a de Polignac number, because 90716393137 - 2¹¹ = 90716391089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90716393167) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13444062 + ... + 13450807.

It is an arithmetic number, because the mean of its divisors is an integer number (22685822845).

Almost surely, 2^90716393137 is an apocalyptic number.

It is an amenable number.

90716393137 is a deficient number, since it is larger than the sum of its proper divisors (26898243).

90716393137 is a wasteful number, since it uses less digits than its factorization.

90716393137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26898242.

The product of its (nonzero) digits is 642978, while the sum is 49.

The spelling of 90716393137 in words is "ninety billion, seven hundred sixteen million, three hundred ninety-three thousand, one hundred thirty-seven".