64512347005 has 8 divisors (see below), whose sum is σ = 77440908600. Its totient is φ = 51592482816.

The previous prime is 64512346991. The next prime is 64512347021. The reversal of 64512347005 is 50074321546.

It can be written as a sum of positive squares in 4 ways, for example, as 4103555481 + 60408791524 = 64059^2 + 245782^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 64512347005 - 2²³ = 64503958397 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2158020 + ... + 2187709.

It is an arithmetic number, because the mean of its divisors is an integer number (9680113575).

Almost surely, 2^64512347005 is an apocalyptic number.

It is an amenable number.

64512347005 is a deficient number, since it is larger than the sum of its proper divisors (12928561595).

64512347005 is a wasteful number, since it uses less digits than its factorization.

64512347005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4348703.

The product of its (nonzero) digits is 100800, while the sum is 37.

The spelling of 64512347005 in words is "sixty-four billion, five hundred twelve million, three hundred forty-seven thousand, five".