23415515012 has 12 divisors (see below), whose sum is σ = 43387572060. Its totient is φ = 11019065856.

The previous prime is 23415514981. The next prime is 23415515021. The reversal of 23415515012 is 21051551432.

It can be written as a sum of positive squares in 2 ways, for example, as 9786353476 + 13629161536 = 98926^2 + 116744^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 172172837 + ... + 172172972.

It is an arithmetic number, because the mean of its divisors is an integer number (3615631005).

Almost surely, 2^23415515012 is an apocalyptic number.

It is an amenable number.

23415515012 is a deficient number, since it is larger than the sum of its proper divisors (19972057048).

23415515012 is a wasteful number, since it uses less digits than its factorization.

23415515012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 344345830 (or 344345828 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 29.

The spelling of 23415515012 in words is "twenty-three billion, four hundred fifteen million, five hundred fifteen thousand, twelve".