12651847851261 has 16 divisors (see below), whose sum is σ = 17021543869440. Its totient is φ = 8358537635760.

The previous prime is 12651847851233. The next prime is 12651847851263. The reversal of 12651847851261 is 16215874815621.

It is not a de Polignac number, because 12651847851261 - 2⁶ = 12651847851197 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12651847851263) 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, 22104775 + ... + 22669908.

It is an arithmetic number, because the mean of its divisors is an integer number (1063846491840).

Almost surely, 2^{12651847851261} is an apocalyptic number.

It is an amenable number.

12651847851261 is a deficient number, since it is larger than the sum of its proper divisors (4369696018179).

12651847851261 is a wasteful number, since it uses less digits than its factorization.

12651847851261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44775536.

The product of its digits is 6451200, while the sum is 57.

The spelling of 12651847851261 in words is "twelve trillion, six hundred fifty-one billion, eight hundred forty-seven million, eight hundred fifty-one thousand, two hundred sixty-one".