12275967681 has 6 divisors (see below), whose sum is σ = 17731953330. Its totient is φ = 8183978448.

The previous prime is 12275967677. The next prime is 12275967751. The reversal of 12275967681 is 18676957221.

It can be written as a sum of positive squares in only one way, i.e., 12273094656 + 2873025 = 110784^2 + 1695^2 .

It is not a de Polignac number, because 12275967681 - 2² = 12275967677 is a prime.

It is a super-2 number, since 2×12275967681² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12275967661) 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, 681998196 + ... + 681998213.

It is an arithmetic number, because the mean of its divisors is an integer number (2955325555).

Almost surely, 2^12275967681 is an apocalyptic number.

It is an amenable number.

12275967681 is a deficient number, since it is larger than the sum of its proper divisors (5455985649).

12275967681 is a wasteful number, since it uses less digits than its factorization.

12275967681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1363996415 (or 1363996412 counting only the distinct ones).

The product of its digits is 2540160, while the sum is 54.

The spelling of 12275967681 in words is "twelve billion, two hundred seventy-five million, nine hundred sixty-seven thousand, six hundred eighty-one".