12496379887 has 2 divisors, whose sum is σ = 12496379888. Its totient is φ = 12496379886.

The previous prime is 12496379867. The next prime is 12496379947. The reversal of 12496379887 is 78897369421.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12496379887 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12496379827) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6248189943 + 6248189944.

It is an arithmetic number, because the mean of its divisors is an integer number (6248189944).

Almost surely, 2^12496379887 is an apocalyptic number.

12496379887 is a deficient number, since it is larger than the sum of its proper divisors (1).

12496379887 is an equidigital number, since it uses as much as digits as its factorization.

12496379887 is an evil number, because the sum of its binary digits is even.

The product of its digits is 36578304, while the sum is 64.

The spelling of 12496379887 in words is "twelve billion, four hundred ninety-six million, three hundred seventy-nine thousand, eight hundred eighty-seven".