12780879514 has 48 divisors (see below), whose sum is σ = 22103859960. Its totient is φ = 5520752640.

The previous prime is 12780879509. The next prime is 12780879533. The reversal of 12780879514 is 41597808721.

It can be written as a sum of positive squares in 12 ways, for example, as 8037225 + 12772842289 = 2835^2 + 113017^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1033882 + ... + 1046170.

Almost surely, 2^12780879514 is an apocalyptic number.

12780879514 is a deficient number, since it is larger than the sum of its proper divisors (9322980446).

12780879514 is a wasteful number, since it uses less digits than its factorization.

12780879514 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12515 (or 12502 counting only the distinct ones).

The product of its (nonzero) digits is 1128960, while the sum is 52.

The spelling of 12780879514 in words is "twelve billion, seven hundred eighty million, eight hundred seventy-nine thousand, five hundred fourteen".