64766390267 has 2 divisors, whose sum is σ = 64766390268. Its totient is φ = 64766390266.

The previous prime is 64766390261. The next prime is 64766390309. The reversal of 64766390267 is 76209366746.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 64766390267 - 2²⁸ = 64497954811 is a prime.

It is not a weakly prime, because it can be changed into another prime (64766390261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32383195133 + 32383195134.

It is an arithmetic number, because the mean of its divisors is an integer number (32383195134).

Almost surely, 2^64766390267 is an apocalyptic number.

64766390267 is a deficient number, since it is larger than the sum of its proper divisors (1).

64766390267 is an equidigital number, since it uses as much as digits as its factorization.

64766390267 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13716864, while the sum is 56.

The spelling of 64766390267 in words is "sixty-four billion, seven hundred sixty-six million, three hundred ninety thousand, two hundred sixty-seven".