23012999999 has 4 divisors (see below), whose sum is σ = 25105090920. Its totient is φ = 20920909080.

The previous prime is 23012999993. The next prime is 23013000019. The reversal of 23012999999 is 99999921032.

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 23012999999 - 2⁴ = 23012999983 is a prime.

It is a Duffinian number.

23012999999 is a modest number, since divided by 999999 gives 23012 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23012999993) 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, 1046045444 + ... + 1046045465.

It is an arithmetic number, because the mean of its divisors is an integer number (6276272730).

Almost surely, 2^23012999999 is an apocalyptic number.

23012999999 is a deficient number, since it is larger than the sum of its proper divisors (2092090921).

23012999999 is a wasteful number, since it uses less digits than its factorization.

23012999999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2092090920.

The product of its (nonzero) digits is 6377292, while the sum is 62.

The spelling of 23012999999 in words is "twenty-three billion, twelve million, nine hundred ninety-nine thousand, nine hundred ninety-nine".