23961023571 has 4 divisors (see below), whose sum is σ = 31948031432. Its totient is φ = 15974015712.

The previous prime is 23961023549. The next prime is 23961023599. The reversal of 23961023571 is 17532016932.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 23961023571 - 2¹¹ = 23961021523 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23961023501) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3993503926 + ... + 3993503931.

It is an arithmetic number, because the mean of its divisors is an integer number (7987007858).

Almost surely, 2^23961023571 is an apocalyptic number.

23961023571 is a deficient number, since it is larger than the sum of its proper divisors (7987007861).

23961023571 is an equidigital number, since it uses as much as digits as its factorization.

23961023571 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7987007860.

The product of its (nonzero) digits is 68040, while the sum is 39.

The spelling of 23961023571 in words is "twenty-three billion, nine hundred sixty-one million, twenty-three thousand, five hundred seventy-one".