523644622321 has 16 divisors (see below), whose sum is σ = 540357027840. Its totient is φ = 507169540800.

The previous prime is 523644622313. The next prime is 523644622343. The reversal of 523644622321 is 123226446325.

It is a cyclic number.

It is not a de Polignac number, because 523644622321 - 2³ = 523644622313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (523644622421) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9604480 + ... + 9658846.

It is an arithmetic number, because the mean of its divisors is an integer number (33772314240).

Almost surely, 2^523644622321 is an apocalyptic number.

It is an amenable number.

523644622321 is a deficient number, since it is larger than the sum of its proper divisors (16712405519).

523644622321 is a wasteful number, since it uses less digits than its factorization.

523644622321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56544.

The product of its digits is 414720, while the sum is 40.

The spelling of 523644622321 in words is "five hundred twenty-three billion, six hundred forty-four million, six hundred twenty-two thousand, three hundred twenty-one".