23939174135 has 4 divisors (see below), whose sum is σ = 28727008968. Its totient is φ = 19151339304.

The previous prime is 23939174131. The next prime is 23939174141. The reversal of 23939174135 is 53147193932.

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

It is a cyclic number.

It is not a de Polignac number, because 23939174135 - 2² = 23939174131 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 23939174135.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23939174131) 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, 2393917409 + ... + 2393917418.

It is an arithmetic number, because the mean of its divisors is an integer number (7181752242).

Almost surely, 2^23939174135 is an apocalyptic number.

23939174135 is a deficient number, since it is larger than the sum of its proper divisors (4787834833).

23939174135 is an equidigital number, since it uses as much as digits as its factorization.

23939174135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4787834832.

The product of its digits is 612360, while the sum is 47.

The spelling of 23939174135 in words is "twenty-three billion, nine hundred thirty-nine million, one hundred seventy-four thousand, one hundred thirty-five".