90659938133 has 4 divisors (see below), whose sum is σ = 90784643040. Its totient is φ = 90535233228.

The previous prime is 90659938099. The next prime is 90659938147. The reversal of 90659938133 is 33183995609.

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-90659938133 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90659938183) 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, 62351363 + ... + 62352816.

It is an arithmetic number, because the mean of its divisors is an integer number (22696160760).

Almost surely, 2^90659938133 is an apocalyptic number.

It is an amenable number.

90659938133 is a deficient number, since it is larger than the sum of its proper divisors (124704907).

90659938133 is a wasteful number, since it uses less digits than its factorization.

90659938133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124704906.

The product of its (nonzero) digits is 4723920, while the sum is 56.

The spelling of 90659938133 in words is "ninety billion, six hundred fifty-nine million, nine hundred thirty-eight thousand, one hundred thirty-three".