23956172994437 has 4 divisors (see below), whose sum is σ = 23956339555020. Its totient is φ = 23956006433856.

The previous prime is 23956172994433. The next prime is 23956172994443. The reversal of 23956172994437 is 73449927165932.

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

It can be written as a sum of positive squares in 2 ways, for example, as 406369275841 + 23549803718596 = 637471^2 + 4852814^2 .

It is a cyclic number.

It is not a de Polignac number, because 23956172994437 - 2² = 23956172994433 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23956172994433) 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, 83064362 + ... + 83352267.

It is an arithmetic number, because the mean of its divisors is an integer number (5989084888755).

Almost surely, 2^{23956172994437} is an apocalyptic number.

It is an amenable number.

23956172994437 is a deficient number, since it is larger than the sum of its proper divisors (166560583).

23956172994437 is a wasteful number, since it uses less digits than its factorization.

23956172994437 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166560582.

The product of its digits is 617258880, while the sum is 71.

The spelling of 23956172994437 in words is "twenty-three trillion, nine hundred fifty-six billion, one hundred seventy-two million, nine hundred ninety-four thousand, four hundred thirty-seven".