12465645026057 has 2 divisors, whose sum is σ = 12465645026058. Its totient is φ = 12465645026056.

The previous prime is 12465645026033. The next prime is 12465645026111. The reversal of 12465645026057 is 75062054656421.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12054707616121 + 410937409936 = 3471989^2 + 641044^2 .

It is a cyclic number.

It is not a de Polignac number, because 12465645026057 - 2²⁰ = 12465643977481 is a prime.

It is not a weakly prime, because it can be changed into another prime (12465645016057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6232822513028 + 6232822513029.

It is an arithmetic number, because the mean of its divisors is an integer number (6232822513029).

Almost surely, 2^{12465645026057} is an apocalyptic number.

It is an amenable number.

12465645026057 is a deficient number, since it is larger than the sum of its proper divisors (1).

12465645026057 is an equidigital number, since it uses as much as digits as its factorization.

12465645026057 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12096000, while the sum is 53.

The spelling of 12465645026057 in words is "twelve trillion, four hundred sixty-five billion, six hundred forty-five million, twenty-six thousand, fifty-seven".