12637909019 has 2 divisors, whose sum is σ = 12637909020. Its totient is φ = 12637909018.

The previous prime is 12637909001. The next prime is 12637909079. The reversal of 12637909019 is 91090973621.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12637909019 is a prime.

It is a super-2 number, since 2×12637909019² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12637909079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6318954509 + 6318954510.

It is an arithmetic number, because the mean of its divisors is an integer number (6318954510).

Almost surely, 2^12637909019 is an apocalyptic number.

12637909019 is a deficient number, since it is larger than the sum of its proper divisors (1).

12637909019 is an equidigital number, since it uses as much as digits as its factorization.

12637909019 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 183708, while the sum is 47.

The spelling of 12637909019 in words is "twelve billion, six hundred thirty-seven million, nine hundred nine thousand, nineteen".