12863805970639 has 32 divisors (see below), whose sum is σ = 13971151119744. Its totient is φ = 11773723299840.

The previous prime is 12863805970627. The next prime is 12863805970661. The reversal of 12863805970639 is 93607950836821.

It is a cyclic number.

It is not a de Polignac number, because 12863805970639 - 2¹⁹ = 12863805446351 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12863805976639) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1669969662 + ... + 1669977364.

It is an arithmetic number, because the mean of its divisors is an integer number (436598472492).

Almost surely, 2^{12863805970639} is an apocalyptic number.

12863805970639 is a deficient number, since it is larger than the sum of its proper divisors (1107345149105).

12863805970639 is a wasteful number, since it uses less digits than its factorization.

12863805970639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9907.

The product of its (nonzero) digits is 117573120, while the sum is 67.

The spelling of 12863805970639 in words is "twelve trillion, eight hundred sixty-three billion, eight hundred five million, nine hundred seventy thousand, six hundred thirty-nine".