64560336215 has 16 divisors (see below), whose sum is σ = 77775122208. Its totient is φ = 51446693376.

The previous prime is 64560336193. The next prime is 64560336241. The reversal of 64560336215 is 51263306546.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64560336215 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2306987 + ... + 2334803.

It is an arithmetic number, because the mean of its divisors is an integer number (4860945138).

Almost surely, 2^64560336215 is an apocalyptic number.

64560336215 is a deficient number, since it is larger than the sum of its proper divisors (13214785993).

64560336215 is a wasteful number, since it uses less digits than its factorization.

64560336215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29618.

The product of its (nonzero) digits is 388800, while the sum is 41.

The spelling of 64560336215 in words is "sixty-four billion, five hundred sixty million, three hundred thirty-six thousand, two hundred fifteen".