90983657197 has 4 divisors (see below), whose sum is σ = 90985779040. Its totient is φ = 90981535356.

The previous prime is 90983657183. The next prime is 90983657207. The reversal of 90983657197 is 79175638909.

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 not a de Polignac number, because 90983657197 - 2¹¹ = 90983655149 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 (90983657147) 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, 995247 + ... + 1082812.

It is an arithmetic number, because the mean of its divisors is an integer number (22746444760).

Almost surely, 2^90983657197 is an apocalyptic number.

It is an amenable number.

90983657197 is a deficient number, since it is larger than the sum of its proper divisors (2121843).

90983657197 is a wasteful number, since it uses less digits than its factorization.

90983657197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2121842.

The product of its (nonzero) digits is 25719120, while the sum is 64.

The spelling of 90983657197 in words is "ninety billion, nine hundred eighty-three million, six hundred fifty-seven thousand, one hundred ninety-seven".