23125433661 has 80 divisors (see below), whose sum is σ = 39638066688. Its totient is φ = 13306550400.

The previous prime is 23125433657. The next prime is 23125433707. The reversal of 23125433661 is 16633452132.

23125433661 is a `hidden beast` number, since 2 + 312 + 5 + 4 + 336 + 6 + 1 = 666.

It is not a de Polignac number, because 23125433661 - 2² = 23125433657 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23125433621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 1456015 + ... + 1471811.

Almost surely, 2^23125433661 is an apocalyptic number.

It is an amenable number.

23125433661 is a deficient number, since it is larger than the sum of its proper divisors (16512633027).

23125433661 is a wasteful number, since it uses less digits than its factorization.

23125433661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15904 (or 15895 counting only the distinct ones).

The product of its digits is 77760, while the sum is 36.

Adding to 23125433661 its reverse (16633452132), we get a palindrome (39758885793).

The spelling of 23125433661 in words is "twenty-three billion, one hundred twenty-five million, four hundred thirty-three thousand, six hundred sixty-one".