12400965919 has 2 divisors, whose sum is σ = 12400965920. Its totient is φ = 12400965918.

The previous prime is 12400965887. The next prime is 12400966021. The reversal of 12400965919 is 91956900421.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12400965919 - 2⁵ = 12400965887 is a prime.

It is a super-2 number, since 2×12400965919² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12400965319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6200482959 + 6200482960.

It is an arithmetic number, because the mean of its divisors is an integer number (6200482960).

Almost surely, 2^12400965919 is an apocalyptic number.

12400965919 is a deficient number, since it is larger than the sum of its proper divisors (1).

12400965919 is an equidigital number, since it uses as much as digits as its factorization.

12400965919 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 174960, while the sum is 46.

The spelling of 12400965919 in words is "twelve billion, four hundred million, nine hundred sixty-five thousand, nine hundred nineteen".