64563195707 has 4 divisors (see below), whose sum is σ = 64566739560. Its totient is φ = 64559651856.

The previous prime is 64563195703. The next prime is 64563195743. The reversal of 64563195707 is 70759136546.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 64563195707 - 2² = 64563195703 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64563195703) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1744457 + ... + 1781082.

It is an arithmetic number, because the mean of its divisors is an integer number (16141684890).

Almost surely, 2^64563195707 is an apocalyptic number.

64563195707 is a deficient number, since it is larger than the sum of its proper divisors (3543853).

64563195707 is a wasteful number, since it uses less digits than its factorization.

64563195707 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3543852.

The product of its (nonzero) digits is 4762800, while the sum is 53.

The spelling of 64563195707 in words is "sixty-four billion, five hundred sixty-three million, one hundred ninety-five thousand, seven hundred seven".