23515213513 has 8 divisors (see below), whose sum is σ = 26278642656. Its totient is φ = 20856064800.

The previous prime is 23515213511. The next prime is 23515213529. The reversal of 23515213513 is 31531251532.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 23515213513 - 2¹ = 23515213511 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23515213511) 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, 26069631 + ... + 26070532.

It is an arithmetic number, because the mean of its divisors is an integer number (3284830332).

Almost surely, 2^23515213513 is an apocalyptic number.

It is an amenable number.

23515213513 is a deficient number, since it is larger than the sum of its proper divisors (2763429143).

23515213513 is a wasteful number, since it uses less digits than its factorization.

23515213513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52140215.

The product of its digits is 13500, while the sum is 31.

The spelling of 23515213513 in words is "twenty-three billion, five hundred fifteen million, two hundred thirteen thousand, five hundred thirteen".