12651385638071 has 4 divisors (see below), whose sum is σ = 12651493915200. Its totient is φ = 12651277360944.

The previous prime is 12651385637911. The next prime is 12651385638083. The reversal of 12651385638071 is 17083658315621.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12651385638071 - 2¹⁸ = 12651385375927 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12651385637998 and 12651385638016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12651385638091) 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, 53963111 + ... + 54197048.

It is an arithmetic number, because the mean of its divisors is an integer number (3162873478800).

Almost surely, 2^{12651385638071} is an apocalyptic number.

12651385638071 is a deficient number, since it is larger than the sum of its proper divisors (108277129).

12651385638071 is a wasteful number, since it uses less digits than its factorization.

12651385638071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108277128.

The product of its (nonzero) digits is 7257600, while the sum is 56.

The spelling of 12651385638071 in words is "twelve trillion, six hundred fifty-one billion, three hundred eighty-five million, six hundred thirty-eight thousand, seventy-one".