12970727668 has 6 divisors (see below), whose sum is σ = 22698773426. Its totient is φ = 6485363832.

The previous prime is 12970727621. The next prime is 12970727669. The reversal of 12970727668 is 86672707921.

It can be written as a sum of positive squares in only one way, i.e., 12042428644 + 928299024 = 109738^2 + 30468^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12970727669) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1621340955 + ... + 1621340962.

Almost surely, 2^12970727668 is an apocalyptic number.

It is an amenable number.

12970727668 is a deficient number, since it is larger than the sum of its proper divisors (9728045758).

12970727668 is a wasteful number, since it uses less digits than its factorization.

12970727668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3242681921 (or 3242681919 counting only the distinct ones).

The product of its (nonzero) digits is 3556224, while the sum is 55.

The spelling of 12970727668 in words is "twelve billion, nine hundred seventy million, seven hundred twenty-seven thousand, six hundred sixty-eight".