12641070977 has 2 divisors, whose sum is σ = 12641070978. Its totient is φ = 12641070976.

The previous prime is 12641070941. The next prime is 12641071043. The reversal of 12641070977 is 77907014621.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11239392256 + 1401678721 = 106016^2 + 37439^2 .

It is a cyclic number.

It is not a de Polignac number, because 12641070977 - 2¹⁴ = 12641054593 is a prime.

It is not a weakly prime, because it can be changed into another prime (12641070577) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6320535488 + 6320535489.

It is an arithmetic number, because the mean of its divisors is an integer number (6320535489).

Almost surely, 2^12641070977 is an apocalyptic number.

It is an amenable number.

12641070977 is a deficient number, since it is larger than the sum of its proper divisors (1).

12641070977 is an equidigital number, since it uses as much as digits as its factorization.

12641070977 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 148176, while the sum is 44.

The spelling of 12641070977 in words is "twelve billion, six hundred forty-one million, seventy thousand, nine hundred seventy-seven".