64454645407 has 2 divisors, whose sum is σ = 64454645408. Its totient is φ = 64454645406.

The previous prime is 64454645399. The next prime is 64454645483. The reversal of 64454645407 is 70454645446.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 64454645407 - 2³ = 64454645399 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64454625407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32227322703 + 32227322704.

It is an arithmetic number, because the mean of its divisors is an integer number (32227322704).

Almost surely, 2^64454645407 is an apocalyptic number.

64454645407 is a deficient number, since it is larger than the sum of its proper divisors (1).

64454645407 is an equidigital number, since it uses as much as digits as its factorization.

64454645407 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6451200, while the sum is 49.

The spelling of 64454645407 in words is "sixty-four billion, four hundred fifty-four million, six hundred forty-five thousand, four hundred seven".