23564013351523 has 16 divisors (see below), whose sum is σ = 23709119304960. Its totient is φ = 23419490925600.

The previous prime is 23564013351521. The next prime is 23564013351533. The reversal of 23564013351523 is 32515331046532.

It is a cyclic number.

It is not a de Polignac number, because 23564013351523 - 2¹ = 23564013351521 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 23564013351523.

It is not an unprimeable number, because it can be changed into a prime (23564013351521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 122903148 + ... + 123094726.

It is an arithmetic number, because the mean of its divisors is an integer number (1481819956560).

Almost surely, 2^{23564013351523} is an apocalyptic number.

23564013351523 is a deficient number, since it is larger than the sum of its proper divisors (145105953437).

23564013351523 is a wasteful number, since it uses less digits than its factorization.

23564013351523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 193098.

The product of its (nonzero) digits is 972000, while the sum is 43.

The spelling of 23564013351523 in words is "twenty-three trillion, five hundred sixty-four billion, thirteen million, three hundred fifty-one thousand, five hundred twenty-three".