12758839091 has 4 divisors (see below), whose sum is σ = 12771003000. Its totient is φ = 12746675184.

The previous prime is 12758839063. The next prime is 12758839097. The reversal of 12758839091 is 19093885721.

It is a happy number.

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 12758839091 - 2¹⁸ = 12758576947 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12758839097) 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, 6080381 + ... + 6082478.

It is an arithmetic number, because the mean of its divisors is an integer number (3192750750).

Almost surely, 2^12758839091 is an apocalyptic number.

12758839091 is a deficient number, since it is larger than the sum of its proper divisors (12163909).

12758839091 is a wasteful number, since it uses less digits than its factorization.

12758839091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12163908.

The product of its (nonzero) digits is 1088640, while the sum is 53.

The spelling of 12758839091 in words is "twelve billion, seven hundred fifty-eight million, eight hundred thirty-nine thousand, ninety-one".