12361915509671 has 16 divisors (see below), whose sum is σ = 15876172429824. Its totient is φ = 9355601607264.

The previous prime is 12361915509641. The next prime is 12361915509677. The reversal of 12361915509671 is 17690551916321.

It is a cyclic number.

It is not a de Polignac number, because 12361915509671 - 2³⁴ = 12344735640487 is a prime.

It is a Smith number, since the sum of its digits (56) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12361915509677) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2953154981 + ... + 2953159166.

It is an arithmetic number, because the mean of its divisors is an integer number (992260776864).

Almost surely, 2^{12361915509671} is an apocalyptic number.

12361915509671 is a deficient number, since it is larger than the sum of its proper divisors (3514256920153).

12361915509671 is a wasteful number, since it uses less digits than its factorization.

12361915509671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5906314190.

The product of its (nonzero) digits is 3061800, while the sum is 56.

The spelling of 12361915509671 in words is "twelve trillion, three hundred sixty-one billion, nine hundred fifteen million, five hundred nine thousand, six hundred seventy-one".