12568778694 has 48 divisors (see below), whose sum is σ = 28860790320. Its totient is φ = 4054428000.

The previous prime is 12568778687. The next prime is 12568778701. The reversal of 12568778694 is 49687786521.

12568778694 is a `hidden beast` number, since 1 + 2 + 568 + 7 + 7 + 8 + 69 + 4 = 666.

It is an interprime number because it is at equal distance from previous prime (12568778687) and next prime (12568778701).

It is a congruent number.

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, 69207 + ... + 172994.

It is an arithmetic number, because the mean of its divisors is an integer number (601266465).

Almost surely, 2^12568778694 is an apocalyptic number.

12568778694 is an abundant number, since it is smaller than the sum of its proper divisors (16292011626).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12568778694 is a wasteful number, since it uses less digits than its factorization.

12568778694 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 242274 (or 242237 counting only the distinct ones).

The product of its digits is 40642560, while the sum is 63.

The spelling of 12568778694 in words is "twelve billion, five hundred sixty-eight million, seven hundred seventy-eight thousand, six hundred ninety-four".