64699332987907 has 2 divisors, whose sum is σ = 64699332987908. Its totient is φ = 64699332987906.

The previous prime is 64699332987881. The next prime is 64699332987923. The reversal of 64699332987907 is 70978923399646.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64699332987907 is a prime.

It is not a weakly prime, because it can be changed into another prime (64699332987937) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32349666493953 + 32349666493954.

It is an arithmetic number, because the mean of its divisors is an integer number (32349666493954).

Almost surely, 2^{64699332987907} is an apocalyptic number.

64699332987907 is a deficient number, since it is larger than the sum of its proper divisors (1).

64699332987907 is an equidigital number, since it uses as much as digits as its factorization.

64699332987907 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6666395904, while the sum is 82.

The spelling of 64699332987907 in words is "sixty-four trillion, six hundred ninety-nine billion, three hundred thirty-two million, nine hundred eighty-seven thousand, nine hundred seven".