90569473657 has 8 divisors (see below), whose sum is σ = 102669848960. Its totient is φ = 79202454480.

The previous prime is 90569473651. The next prime is 90569473661. The reversal of 90569473657 is 75637496509.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 90569473657 - 2²³ = 90561085049 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 90569473595 and 90569473604.

It is not an unprimeable number, because it can be changed into a prime (90569473651) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 183338769 + ... + 183339262.

It is an arithmetic number, because the mean of its divisors is an integer number (12833731120).

Almost surely, 2^90569473657 is an apocalyptic number.

It is an amenable number.

90569473657 is a deficient number, since it is larger than the sum of its proper divisors (12100375303).

90569473657 is a wasteful number, since it uses less digits than its factorization.

90569473657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 366678063.

The product of its (nonzero) digits is 42865200, while the sum is 61.

The spelling of 90569473657 in words is "ninety billion, five hundred sixty-nine million, four hundred seventy-three thousand, six hundred fifty-seven".