64396987267 has 2 divisors, whose sum is σ = 64396987268. Its totient is φ = 64396987266.

The previous prime is 64396987247. The next prime is 64396987327. The reversal of 64396987267 is 76278969346.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 64396987267 - 2²⁷ = 64262769539 is a prime.

It is not a weakly prime, because it can be changed into another prime (64396987217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32198493633 + 32198493634.

It is an arithmetic number, because the mean of its divisors is an integer number (32198493634).

Almost surely, 2^64396987267 is an apocalyptic number.

64396987267 is a deficient number, since it is larger than the sum of its proper divisors (1).

64396987267 is an equidigital number, since it uses as much as digits as its factorization.

64396987267 is an evil number, because the sum of its binary digits is even.

The product of its digits is 164602368, while the sum is 67.

The spelling of 64396987267 in words is "sixty-four billion, three hundred ninety-six million, nine hundred eighty-seven thousand, two hundred sixty-seven".