12762752621 has 2 divisors, whose sum is σ = 12762752622. Its totient is φ = 12762752620.

The previous prime is 12762752617. The next prime is 12762752671. The reversal of 12762752621 is 12625726721.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9937298596 + 2825454025 = 99686^2 + 53155^2 .

It is an emirp because it is prime and its reverse (12625726721) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12762752621 - 2² = 12762752617 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12762752671) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6381376310 + 6381376311.

It is an arithmetic number, because the mean of its divisors is an integer number (6381376311).

Almost surely, 2^12762752621 is an apocalyptic number.

It is an amenable number.

12762752621 is a deficient number, since it is larger than the sum of its proper divisors (1).

12762752621 is an equidigital number, since it uses as much as digits as its factorization.

12762752621 is an evil number, because the sum of its binary digits is even.

The product of its digits is 141120, while the sum is 41.

The spelling of 12762752621 in words is "twelve billion, seven hundred sixty-two million, seven hundred fifty-two thousand, six hundred twenty-one".