12694738406 has 96 divisors (see below), whose sum is σ = 24680339712. Its totient is φ = 4859688960.

The previous prime is 12694738391. The next prime is 12694738411. The reversal of 12694738406 is 60483749621.

It is a super-2 number, since 2×12694738406² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

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 47 ways as a sum of consecutive naturals, for example, 2524811 + ... + 2529833.

It is an arithmetic number, because the mean of its divisors is an integer number (257086872).

Almost surely, 2^12694738406 is an apocalyptic number.

12694738406 is a deficient number, since it is larger than the sum of its proper divisors (11985601306).

12694738406 is a wasteful number, since it uses less digits than its factorization.

12694738406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5134 (or 5127 counting only the distinct ones).

The product of its (nonzero) digits is 1741824, while the sum is 50.

The spelling of 12694738406 in words is "twelve billion, six hundred ninety-four million, seven hundred thirty-eight thousand, four hundred six".