12640167619 has 2 divisors, whose sum is σ = 12640167620. Its totient is φ = 12640167618.

The previous prime is 12640167593. The next prime is 12640167623. The reversal of 12640167619 is 91676104621.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12640167619 - 2¹⁷ = 12640036547 is a prime.

It is a super-2 number, since 2×12640167619² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12640167649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6320083809 + 6320083810.

It is an arithmetic number, because the mean of its divisors is an integer number (6320083810).

Almost surely, 2^12640167619 is an apocalyptic number.

12640167619 is a deficient number, since it is larger than the sum of its proper divisors (1).

12640167619 is an equidigital number, since it uses as much as digits as its factorization.

12640167619 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108864, while the sum is 43.

The spelling of 12640167619 in words is "twelve billion, six hundred forty million, one hundred sixty-seven thousand, six hundred nineteen".