12709716478 has 16 divisors (see below), whose sum is σ = 19198771200. Its totient is φ = 6310254456.

The previous prime is 12709716431. The next prime is 12709716491. The reversal of 12709716478 is 87461790721.

It is a super-2 number, since 2×12709716478² (a number of 21 digits) contains 22 as substring.

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, 168451 + ... + 231937.

It is an arithmetic number, because the mean of its divisors is an integer number (1199923200).

Almost surely, 2^12709716478 is an apocalyptic number.

12709716478 is a deficient number, since it is larger than the sum of its proper divisors (6489054722).

12709716478 is a wasteful number, since it uses less digits than its factorization.

12709716478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64191.

The product of its (nonzero) digits is 1185408, while the sum is 52.

The spelling of 12709716478 in words is "twelve billion, seven hundred nine million, seven hundred sixteen thousand, four hundred seventy-eight".