90337971523 has 4 divisors (see below), whose sum is σ = 90395623360. Its totient is φ = 90280319688.

The previous prime is 90337971499. The next prime is 90337971541. The reversal of 90337971523 is 32517973309.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32517973309 = 17333 ⋅1876073.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-90337971523 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90337971323) 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, 28823568 + ... + 28826701.

It is an arithmetic number, because the mean of its divisors is an integer number (22598905840).

Almost surely, 2^90337971523 is an apocalyptic number.

90337971523 is a deficient number, since it is larger than the sum of its proper divisors (57651837).

90337971523 is a wasteful number, since it uses less digits than its factorization.

90337971523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57651836.

The product of its (nonzero) digits is 1071630, while the sum is 49.

The spelling of 90337971523 in words is "ninety billion, three hundred thirty-seven million, nine hundred seventy-one thousand, five hundred twenty-three".