12639026501 has 4 divisors (see below), whose sum is σ = 12757148352. Its totient is φ = 12520904652.

The previous prime is 12639026497. The next prime is 12639026503. The reversal of 12639026501 is 10562093621.

12639026501 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12639026501 - 2² = 12639026497 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12639026503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 59060765 + ... + 59060978.

It is an arithmetic number, because the mean of its divisors is an integer number (3189287088).

Almost surely, 2^12639026501 is an apocalyptic number.

It is an amenable number.

12639026501 is a deficient number, since it is larger than the sum of its proper divisors (118121851).

12639026501 is a wasteful number, since it uses less digits than its factorization.

12639026501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118121850.

The product of its (nonzero) digits is 19440, while the sum is 35.

The spelling of 12639026501 in words is "twelve billion, six hundred thirty-nine million, twenty-six thousand, five hundred one".