12651262639 has 8 divisors (see below), whose sum is σ = 12686961920. Its totient is φ = 12615615000.

The previous prime is 12651262619. The next prime is 12651262643. The reversal of 12651262639 is 93626215621.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12651262639 - 2¹⁷ = 12651131567 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12651262595 and 12651262604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12651262619) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 506752 + ... + 531130.

It is an arithmetic number, because the mean of its divisors is an integer number (1585870240).

Almost surely, 2^12651262639 is an apocalyptic number.

12651262639 is a deficient number, since it is larger than the sum of its proper divisors (35699281).

12651262639 is an equidigital number, since it uses as much as digits as its factorization.

12651262639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25821.

The product of its digits is 233280, while the sum is 43.

The spelling of 12651262639 in words is "twelve billion, six hundred fifty-one million, two hundred sixty-two thousand, six hundred thirty-nine".