64110320345 has 4 divisors (see below), whose sum is σ = 76932384420. Its totient is φ = 51288256272.

The previous prime is 64110320317. The next prime is 64110320377. The reversal of 64110320345 is 54302301146.

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 43952283904 + 20158036441 = 209648^2 + 141979^2 .

It is a cyclic number.

It is not a de Polignac number, because 64110320345 - 2⁸ = 64110320089 is a prime.

It is a super-2 number, since 2×64110320345² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6411032030 + ... + 6411032039.

It is an arithmetic number, because the mean of its divisors is an integer number (19233096105).

Almost surely, 2^64110320345 is an apocalyptic number.

It is an amenable number.

64110320345 is a deficient number, since it is larger than the sum of its proper divisors (12822064075).

64110320345 is a wasteful number, since it uses less digits than its factorization.

64110320345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12822064074.

The product of its (nonzero) digits is 8640, while the sum is 29.

The spelling of 64110320345 in words is "sixty-four billion, one hundred ten million, three hundred twenty thousand, three hundred forty-five".