12778504274 has 16 divisors (see below), whose sum is σ = 20767256928. Its totient is φ = 5873566272.

The previous prime is 12778504273. The next prime is 12778504309. The reversal of 12778504274 is 47240587721.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12778504273) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4368752 + ... + 4371675.

It is an arithmetic number, because the mean of its divisors is an integer number (1297953558).

Almost surely, 2^12778504274 is an apocalyptic number.

12778504274 is a deficient number, since it is larger than the sum of its proper divisors (7988752654).

12778504274 is a wasteful number, since it uses less digits than its factorization.

12778504274 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8740489.

The product of its (nonzero) digits is 878080, while the sum is 47.

The spelling of 12778504274 in words is "twelve billion, seven hundred seventy-eight million, five hundred four thousand, two hundred seventy-four".