90564646523 has 8 divisors (see below), whose sum is σ = 98041794816. Its totient is φ = 83160446400.

The previous prime is 90564646511. The next prime is 90564646559. The reversal of 90564646523 is 32564646509.

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 90564646523 - 2⁸ = 90564646267 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90564646573) 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 7 ways as a sum of consecutive naturals, for example, 18234458 + ... + 18239423.

It is an arithmetic number, because the mean of its divisors is an integer number (12255224352).

Almost surely, 2^90564646523 is an apocalyptic number.

90564646523 is a deficient number, since it is larger than the sum of its proper divisors (7477148293).

90564646523 is a wasteful number, since it uses less digits than its factorization.

90564646523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36474085.

The product of its (nonzero) digits is 4665600, while the sum is 50.

The spelling of 90564646523 in words is "ninety billion, five hundred sixty-four million, six hundred forty-six thousand, five hundred twenty-three".