23944158121 has 9 divisors (see below), whose sum is σ = 25929876279. Its totient is φ = 22100442936.

The previous prime is 23944158109. The next prime is 23944158143. The reversal of 23944158121 is 12185144932.

The square root of 23944158121 is 154739.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 3542035225 + 20402122896 = 59515^2 + 142836^2 .

It is not a de Polignac number, because 23944158121 - 2⁹ = 23944157609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23944108121) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 2005656 + ... + 2017558.

Almost surely, 2^23944158121 is an apocalyptic number.

23944158121 is the 154739-th square number.

23944158121 is the 77370-th centered octagonal number.

It is an amenable number.

23944158121 is a deficient number, since it is larger than the sum of its proper divisors (1985718158).

23944158121 is an frugal number, since it uses more digits than its factorization.

23944158121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23832 (or 11916 counting only the distinct ones).

The product of its digits is 69120, while the sum is 40.

The spelling of 23944158121 in words is "twenty-three billion, nine hundred forty-four million, one hundred fifty-eight thousand, one hundred twenty-one".