23515651241 has 4 divisors (see below), whose sum is σ = 23517658752. Its totient is φ = 23513643732.

The previous prime is 23515651231. The next prime is 23515651253. The reversal of 23515651241 is 14215651532.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 23515651241 - 2¹⁰ = 23515650217 is a prime.

It is a super-5 number, since 5×23515651241⁵ (a number of 53 digits) contains 55555 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23515651231) 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, 986081 + ... + 1009646.

It is an arithmetic number, because the mean of its divisors is an integer number (5879414688).

Almost surely, 2^23515651241 is an apocalyptic number.

It is an amenable number.

23515651241 is a deficient number, since it is larger than the sum of its proper divisors (2007511).

23515651241 is a wasteful number, since it uses less digits than its factorization.

23515651241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2007510.

The product of its digits is 36000, while the sum is 35.

The spelling of 23515651241 in words is "twenty-three billion, five hundred fifteen million, six hundred fifty-one thousand, two hundred forty-one".