12713215863261 has 4 divisors (see below), whose sum is σ = 16950954484352. Its totient is φ = 8475477242172.

The previous prime is 12713215863223. The next prime is 12713215863317. The reversal of 12713215863261 is 16236851231721.

12713215863261 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 not a de Polignac number, because 12713215863261 - 2⁷ = 12713215863133 is a prime.

It is a super-2 number, since 2×12713215863261² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12713215863261.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12713215163261) 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, 2118869310541 + ... + 2118869310546.

It is an arithmetic number, because the mean of its divisors is an integer number (4237738621088).

Almost surely, 2^{12713215863261} is an apocalyptic number.

It is an amenable number.

12713215863261 is a deficient number, since it is larger than the sum of its proper divisors (4237738621091).

12713215863261 is an equidigital number, since it uses as much as digits as its factorization.

12713215863261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4237738621090.

The product of its digits is 725760, while the sum is 48.

The spelling of 12713215863261 in words is "twelve trillion, seven hundred thirteen billion, two hundred fifteen million, eight hundred sixty-three thousand, two hundred sixty-one".