12697142986 has 12 divisors (see below), whose sum is σ = 20934546066. Its totient is φ = 5771428520.

The previous prime is 12697142923. The next prime is 12697142989. The reversal of 12697142986 is 68924179621.

It can be written as a sum of positive squares in only one way, i.e., 7322053761 + 5375089225 = 85569^2 + 73315^2 .

It is a super-2 number, since 2×12697142986² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12697142989) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 26233525 + ... + 26234008.

Almost surely, 2^12697142986 is an apocalyptic number.

12697142986 is a deficient number, since it is larger than the sum of its proper divisors (8237403080).

12697142986 is a wasteful number, since it uses less digits than its factorization.

12697142986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52467557 (or 52467546 counting only the distinct ones).

The product of its digits is 2612736, while the sum is 55.

The spelling of 12697142986 in words is "twelve billion, six hundred ninety-seven million, one hundred forty-two thousand, nine hundred eighty-six".