90850711297 has 4 divisors (see below), whose sum is σ = 90851515056. Its totient is φ = 90849907540.

The previous prime is 90850711283. The next prime is 90850711319. The reversal of 90850711297 is 79211705809.

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.

It is a cyclic number.

It is not a de Polignac number, because 90850711297 - 2²³ = 90842322689 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 90850711297.

It is not an unprimeable number, because it can be changed into a prime (90850711247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 197779 + ... + 469912.

It is an arithmetic number, because the mean of its divisors is an integer number (22712878764).

Almost surely, 2^90850711297 is an apocalyptic number.

It is an amenable number.

90850711297 is a deficient number, since it is larger than the sum of its proper divisors (803759).

90850711297 is a wasteful number, since it uses less digits than its factorization.

90850711297 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 803758.

The product of its (nonzero) digits is 317520, while the sum is 49.

The spelling of 90850711297 in words is "ninety billion, eight hundred fifty million, seven hundred eleven thousand, two hundred ninety-seven".