23904135157 has 6 divisors (see below), whose sum is σ = 27806851158. Its totient is φ = 20489258664.

The previous prime is 23904135121. The next prime is 23904135193. The reversal of 23904135157 is 75153140932.

It is an interprime number because it is at equal distance from previous prime (23904135121) and next prime (23904135193).

It can be written as a sum of positive squares in only one way, i.e., 22559739601 + 1344395556 = 150199^2 + 36666^2 .

It is a de Polignac number, because none of the positive numbers 2^k-23904135157 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 (23904135197) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 243919698 + ... + 243919795.

It is an arithmetic number, because the mean of its divisors is an integer number (4634475193).

Almost surely, 2^23904135157 is an apocalyptic number.

It is an amenable number.

23904135157 is a deficient number, since it is larger than the sum of its proper divisors (3902716001).

23904135157 is an equidigital number, since it uses as much as digits as its factorization.

23904135157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 487839507 (or 487839500 counting only the distinct ones).

The product of its (nonzero) digits is 113400, while the sum is 40.

The spelling of 23904135157 in words is "twenty-three billion, nine hundred four million, one hundred thirty-five thousand, one hundred fifty-seven".