12566746352 has 30 divisors (see below), whose sum is σ = 24401452344. Its totient is φ = 6269619520.

The previous prime is 12566746343. The next prime is 12566746391. The reversal of 12566746352 is 25364766521.

It is a super-2 number, since 2×12566746352² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12566746297 and 12566746306.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 13354202 + ... + 13355142.

Almost surely, 2^12566746352 is an apocalyptic number.

It is an amenable number.

12566746352 is a deficient number, since it is larger than the sum of its proper divisors (11834705992).

12566746352 is an frugal number, since it uses more digits than its factorization.

12566746352 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2777 (or 1830 counting only the distinct ones).

The product of its digits is 1814400, while the sum is 47.

The spelling of 12566746352 in words is "twelve billion, five hundred sixty-six million, seven hundred forty-six thousand, three hundred fifty-two".