12558790639 has 4 divisors (see below), whose sum is σ = 13219779640. Its totient is φ = 11897801640.

The previous prime is 12558790633. The next prime is 12558790709. The reversal of 12558790639 is 93609785521.

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 12558790639 - 2¹⁹ = 12558266351 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12558790639.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12558790633) 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, 330494472 + ... + 330494509.

It is an arithmetic number, because the mean of its divisors is an integer number (3304944910).

Almost surely, 2^12558790639 is an apocalyptic number.

12558790639 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

12558790639 is a deficient number, since it is larger than the sum of its proper divisors (660989001).

12558790639 is an equidigital number, since it uses as much as digits as its factorization.

12558790639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 660989000.

The product of its (nonzero) digits is 4082400, while the sum is 55.

The spelling of 12558790639 in words is "twelve billion, five hundred fifty-eight million, seven hundred ninety thousand, six hundred thirty-nine".