90207117773 has 4 divisors (see below), whose sum is σ = 90216329568. Its totient is φ = 90197905980.

The previous prime is 90207117757. The next prime is 90207117797. The reversal of 90207117773 is 37771170209.

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 90207117773 - 2⁴ = 90207117757 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 (90207117673) 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, 4591193 + ... + 4610798.

It is an arithmetic number, because the mean of its divisors is an integer number (22554082392).

Almost surely, 2^90207117773 is an apocalyptic number.

It is an amenable number.

90207117773 is a deficient number, since it is larger than the sum of its proper divisors (9211795).

90207117773 is an equidigital number, since it uses as much as digits as its factorization.

90207117773 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9211794.

The product of its (nonzero) digits is 129654, while the sum is 44.

The spelling of 90207117773 in words is "ninety billion, two hundred seven million, one hundred seventeen thousand, seven hundred seventy-three".