23158926729 has 8 divisors (see below), whose sum is σ = 34309521120. Its totient is φ = 15439284468.

The previous prime is 23158926697. The next prime is 23158926761. The reversal of 23158926729 is 92762985132.

23158926729 is a `hidden beast` number, since 2 + 31 + 589 + 2 + 6 + 7 + 29 = 666.

It is an interprime number because it is at equal distance from previous prime (23158926697) and next prime (23158926761).

It is not a de Polignac number, because 23158926729 - 2⁵ = 23158926697 is a prime.

It is not an unprimeable number, because it can be changed into a prime (23158924729) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 428868987 + ... + 428869040.

It is an arithmetic number, because the mean of its divisors is an integer number (4288690140).

Almost surely, 2^23158926729 is an apocalyptic number.

It is an amenable number.

23158926729 is a deficient number, since it is larger than the sum of its proper divisors (11150594391).

23158926729 is an equidigital number, since it uses as much as digits as its factorization.

23158926729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 857738036 (or 857738030 counting only the distinct ones).

The product of its digits is 3265920, while the sum is 54.

The spelling of 23158926729 in words is "twenty-three billion, one hundred fifty-eight million, nine hundred twenty-six thousand, seven hundred twenty-nine".