12465833857 has 2 divisors, whose sum is σ = 12465833858. Its totient is φ = 12465833856.

The previous prime is 12465833851. The next prime is 12465833951. The reversal of 12465833857 is 75833856421.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10676882241 + 1788951616 = 103329^2 + 42296^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12465833857 is a prime.

It is not a weakly prime, because it can be changed into another prime (12465833851) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6232916928 + 6232916929.

It is an arithmetic number, because the mean of its divisors is an integer number (6232916929).

Almost surely, 2^12465833857 is an apocalyptic number.

It is an amenable number.

12465833857 is a deficient number, since it is larger than the sum of its proper divisors (1).

12465833857 is an equidigital number, since it uses as much as digits as its factorization.

12465833857 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4838400, while the sum is 52.

The spelling of 12465833857 in words is "twelve billion, four hundred sixty-five million, eight hundred thirty-three thousand, eight hundred fifty-seven".