64864799999 has 2 divisors, whose sum is σ = 64864800000. Its totient is φ = 64864799998.

The previous prime is 64864799977. The next prime is 64864800113. The reversal of 64864799999 is 99999746846.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64864799999 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64864799929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32432399999 + 32432400000.

It is an arithmetic number, because the mean of its divisors is an integer number (32432400000).

Almost surely, 2^64864799999 is an apocalyptic number.

64864799999 is a deficient number, since it is larger than the sum of its proper divisors (1).

64864799999 is an equidigital number, since it uses as much as digits as its factorization.

64864799999 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1904684544, while the sum is 80.

The spelling of 64864799999 in words is "sixty-four billion, eight hundred sixty-four million, seven hundred ninety-nine thousand, nine hundred ninety-nine".