64700914321 has 4 divisors (see below), whose sum is σ = 66278985444. Its totient is φ = 63122843200.

The previous prime is 64700914297. The next prime is 64700914331. The reversal of 64700914321 is 12341900746.

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

It can be written as a sum of positive squares in 2 ways, for example, as 15268062096 + 49432852225 = 123564^2 + 222335^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64700914321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64700914331) 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, 789035500 + ... + 789035581.

It is an arithmetic number, because the mean of its divisors is an integer number (16569746361).

Almost surely, 2^64700914321 is an apocalyptic number.

It is an amenable number.

64700914321 is a deficient number, since it is larger than the sum of its proper divisors (1578071123).

64700914321 is a wasteful number, since it uses less digits than its factorization.

64700914321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1578071122.

The product of its (nonzero) digits is 36288, while the sum is 37.

The spelling of 64700914321 in words is "sixty-four billion, seven hundred million, nine hundred fourteen thousand, three hundred twenty-one".