12779430506 has 8 divisors (see below), whose sum is σ = 19219725120. Its totient is φ = 6372855468.

The previous prime is 12779430487. The next prime is 12779430527. The reversal of 12779430506 is 60503497721.

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

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 8428946 + ... + 8430461.

It is an arithmetic number, because the mean of its divisors is an integer number (2402465640).

Almost surely, 2^12779430506 is an apocalyptic number.

12779430506 is a deficient number, since it is larger than the sum of its proper divisors (6440294614).

12779430506 is a wasteful number, since it uses less digits than its factorization.

12779430506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16859788.

The product of its (nonzero) digits is 317520, while the sum is 44.

The spelling of 12779430506 in words is "twelve billion, seven hundred seventy-nine million, four hundred thirty thousand, five hundred six".