90538256833 has 4 divisors (see below), whose sum is σ = 90733804288. Its totient is φ = 90342709380.

The previous prime is 90538256813. The next prime is 90538256849. The reversal of 90538256833 is 33865283509.

It is a happy number.

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.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-90538256833 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90538256813) 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, 97773033 + ... + 97773958.

It is an arithmetic number, because the mean of its divisors is an integer number (22683451072).

Almost surely, 2^90538256833 is an apocalyptic number.

It is an amenable number.

90538256833 is a deficient number, since it is larger than the sum of its proper divisors (195547455).

90538256833 is a wasteful number, since it uses less digits than its factorization.

90538256833 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195547454.

The product of its (nonzero) digits is 4665600, while the sum is 52.

The spelling of 90538256833 in words is "ninety billion, five hundred thirty-eight million, two hundred fifty-six thousand, eight hundred thirty-three".