12754691641 has 2 divisors, whose sum is σ = 12754691642. Its totient is φ = 12754691640.

The previous prime is 12754691629. The next prime is 12754691657. The reversal of 12754691641 is 14619645721.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12584128041 + 170563600 = 112179^2 + 13060^2 .

It is a cyclic number.

It is not a de Polignac number, because 12754691641 - 2²⁷ = 12620473913 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12754691591 and 12754691600.

It is not a weakly prime, because it can be changed into another prime (12754691941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6377345820 + 6377345821.

It is an arithmetic number, because the mean of its divisors is an integer number (6377345821).

Almost surely, 2^12754691641 is an apocalyptic number.

It is an amenable number.

12754691641 is a deficient number, since it is larger than the sum of its proper divisors (1).

12754691641 is an equidigital number, since it uses as much as digits as its factorization.

12754691641 is an evil number, because the sum of its binary digits is even.

The product of its digits is 362880, while the sum is 46.

The spelling of 12754691641 in words is "twelve billion, seven hundred fifty-four million, six hundred ninety-one thousand, six hundred forty-one".