12738751366 has 16 divisors (see below), whose sum is σ = 20847124368. Its totient is φ = 5789815200.

The previous prime is 12738751309. The next prime is 12738751379. The reversal of 12738751366 is 66315783721.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 326056 + ... + 363028.

It is an arithmetic number, because the mean of its divisors is an integer number (1302945273).

Almost surely, 2^12738751366 is an apocalyptic number.

12738751366 is a deficient number, since it is larger than the sum of its proper divisors (8108373002).

12738751366 is a wasteful number, since it uses less digits than its factorization.

12738751366 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52647.

The product of its digits is 1270080, while the sum is 49.

The spelling of 12738751366 in words is "twelve billion, seven hundred thirty-eight million, seven hundred fifty-one thousand, three hundred sixty-six".