23701872561 has 8 divisors (see below), whose sum is σ = 32047602624. Its totient is φ = 15578695440.

The previous prime is 23701872547. The next prime is 23701872613. The reversal of 23701872561 is 16527810732.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 23701872561 - 2²¹ = 23699775409 is a prime.

It is not an unprimeable number, because it can be changed into a prime (23701879561) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55637986 + ... + 55638411.

It is an arithmetic number, because the mean of its divisors is an integer number (4005950328).

Almost surely, 2^23701872561 is an apocalyptic number.

It is an amenable number.

23701872561 is a deficient number, since it is larger than the sum of its proper divisors (8345730063).

23701872561 is a wasteful number, since it uses less digits than its factorization.

23701872561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111276471.

The product of its (nonzero) digits is 141120, while the sum is 42.

The spelling of 23701872561 in words is "twenty-three billion, seven hundred one million, eight hundred seventy-two thousand, five hundred sixty-one".