23124325521561 has 32 divisors (see below), whose sum is σ = 34545488947200. Its totient is φ = 13635554604480.

The previous prime is 23124325521553. The next prime is 23124325521593. The reversal of 23124325521561 is 16512552342132.

It is not a de Polignac number, because 23124325521561 - 2³ = 23124325521553 is a prime.

It is not an unprimeable number, because it can be changed into a prime (23124325501561) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 42880960 + ... + 43416878.

It is an arithmetic number, because the mean of its divisors is an integer number (1079546529600).

Almost surely, 2^{23124325521561} is an apocalyptic number.

It is an amenable number.

23124325521561 is a deficient number, since it is larger than the sum of its proper divisors (11421163425639).

23124325521561 is a wasteful number, since it uses less digits than its factorization.

23124325521561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 571309.

The product of its digits is 432000, while the sum is 42.

Adding to 23124325521561 its reverse (16512552342132), we get a palindrome (39636877863693).

The spelling of 23124325521561 in words is "twenty-three trillion, one hundred twenty-four billion, three hundred twenty-five million, five hundred twenty-one thousand, five hundred sixty-one".