64380808699 has 2 divisors, whose sum is σ = 64380808700. Its totient is φ = 64380808698.

The previous prime is 64380808643. The next prime is 64380808757. The reversal of 64380808699 is 99680808346.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64380808699 is a prime.

It is not a weakly prime, because it can be changed into another prime (64380808099) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32190404349 + 32190404350.

It is an arithmetic number, because the mean of its divisors is an integer number (32190404350).

Almost surely, 2^64380808699 is an apocalyptic number.

64380808699 is a deficient number, since it is larger than the sum of its proper divisors (1).

64380808699 is an equidigital number, since it uses as much as digits as its factorization.

64380808699 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17915904, while the sum is 61.

The spelling of 64380808699 in words is "sixty-four billion, three hundred eighty million, eight hundred eight thousand, six hundred ninety-nine".