64390065007 has 2 divisors, whose sum is σ = 64390065008. Its totient is φ = 64390065006.

The previous prime is 64390064993. The next prime is 64390065041. The reversal of 64390065007 is 70056009346.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64390065007 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64390015007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32195032503 + 32195032504.

It is an arithmetic number, because the mean of its divisors is an integer number (32195032504).

Almost surely, 2^64390065007 is an apocalyptic number.

64390065007 is a deficient number, since it is larger than the sum of its proper divisors (1).

64390065007 is an equidigital number, since it uses as much as digits as its factorization.

64390065007 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 136080, while the sum is 40.

The spelling of 64390065007 in words is "sixty-four billion, three hundred ninety million, sixty-five thousand, seven".