12870519491 has 2 divisors, whose sum is σ = 12870519492. Its totient is φ = 12870519490.

The previous prime is 12870519437. The next prime is 12870519509. The reversal of 12870519491 is 19491507821.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12870519491 - 2²² = 12866325187 is a prime.

It is not a weakly prime, because it can be changed into another prime (12870519691) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6435259745 + 6435259746.

It is an arithmetic number, because the mean of its divisors is an integer number (6435259746).

Almost surely, 2^12870519491 is an apocalyptic number.

12870519491 is a deficient number, since it is larger than the sum of its proper divisors (1).

12870519491 is an equidigital number, since it uses as much as digits as its factorization.

12870519491 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 181440, while the sum is 47.

The spelling of 12870519491 in words is "twelve billion, eight hundred seventy million, five hundred nineteen thousand, four hundred ninety-one".