23101563515 has 16 divisors (see below), whose sum is σ = 28931302656. Its totient is φ = 17675196000.

The previous prime is 23101563493. The next prime is 23101563533. The reversal of 23101563515 is 51536510132.

It is a de Polignac number, because none of the positive numbers 2^k-23101563515 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1396040 + ... + 1412490.

It is an arithmetic number, because the mean of its divisors is an integer number (1808206416).

Almost surely, 2^23101563515 is an apocalyptic number.

23101563515 is a deficient number, since it is larger than the sum of its proper divisors (5829739141).

23101563515 is a wasteful number, since it uses less digits than its factorization.

23101563515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28690.

The product of its (nonzero) digits is 13500, while the sum is 32.

The spelling of 23101563515 in words is "twenty-three billion, one hundred one million, five hundred sixty-three thousand, five hundred fifteen".