12517952361 has 8 divisors (see below), whose sum is σ = 16691120160. Its totient is φ = 8345043072.

The previous prime is 12517952339. The next prime is 12517952371. The reversal of 12517952361 is 16325971521.

It is a happy number.

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

It is not a de Polignac number, because 12517952361 - 2²² = 12513758057 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12517952311) 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, 154681 + ... + 221273.

It is an arithmetic number, because the mean of its divisors is an integer number (2086390020).

Almost surely, 2^12517952361 is an apocalyptic number.

It is an amenable number.

12517952361 is a deficient number, since it is larger than the sum of its proper divisors (4173167799).

12517952361 is an equidigital number, since it uses as much as digits as its factorization.

12517952361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129255.

The product of its digits is 113400, while the sum is 42.

The spelling of 12517952361 in words is "twelve billion, five hundred seventeen million, nine hundred fifty-two thousand, three hundred sixty-one".