12400965937 has 4 divisors (see below), whose sum is σ = 12401700340. Its totient is φ = 12400231536.

The previous prime is 12400965919. The next prime is 12400966021. The reversal of 12400965937 is 73956900421.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 73956900421 = 7583 ⋅9752987.

It can be written as a sum of positive squares in 2 ways, for example, as 3858770161 + 8542195776 = 62119^2 + 92424^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12400965937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12400965337) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 341262 + ... + 375847.

It is an arithmetic number, because the mean of its divisors is an integer number (3100425085).

Almost surely, 2^12400965937 is an apocalyptic number.

It is an amenable number.

12400965937 is a deficient number, since it is larger than the sum of its proper divisors (734403).

12400965937 is an equidigital number, since it uses as much as digits as its factorization.

12400965937 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 734402.

The product of its (nonzero) digits is 408240, while the sum is 46.

The spelling of 12400965937 in words is "twelve billion, four hundred million, nine hundred sixty-five thousand, nine hundred thirty-seven".