12779486934 has 32 divisors (see below), whose sum is σ = 26395130880. Its totient is φ = 4120591200.

The previous prime is 12779486879. The next prime is 12779486939. The reversal of 12779486934 is 43968497721.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12779486939) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 443404 + ... + 471344.

It is an arithmetic number, because the mean of its divisors is an integer number (824847840).

Almost surely, 2^12779486934 is an apocalyptic number.

12779486934 is an abundant number, since it is smaller than the sum of its proper divisors (13615643946).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12779486934 is a wasteful number, since it uses less digits than its factorization.

12779486934 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30436.

The product of its digits is 18289152, while the sum is 60.

The spelling of 12779486934 in words is "twelve billion, seven hundred seventy-nine million, four hundred eighty-six thousand, nine hundred thirty-four".