90488504237 has 4 divisors (see below), whose sum is σ = 90489359616. Its totient is φ = 90487648860.

The previous prime is 90488504209. The next prime is 90488504251. The reversal of 90488504237 is 73240588409.

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 a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 73240588409 = 19 ⋅3854767811.

It is a cyclic number.

It is not a de Polignac number, because 90488504237 - 2⁸ = 90488503981 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90488506237) 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, 242189 + ... + 489522.

It is an arithmetic number, because the mean of its divisors is an integer number (22622339904).

Almost surely, 2^90488504237 is an apocalyptic number.

It is an amenable number.

90488504237 is a deficient number, since it is larger than the sum of its proper divisors (855379).

90488504237 is a wasteful number, since it uses less digits than its factorization.

90488504237 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 855378.

The product of its (nonzero) digits is 1935360, while the sum is 50.

The spelling of 90488504237 in words is "ninety billion, four hundred eighty-eight million, five hundred four thousand, two hundred thirty-seven".