64717764706 has 32 divisors (see below), whose sum is σ = 115207642368. Its totient is φ = 26688994560.

The previous prime is 64717764703. The next prime is 64717764719. The reversal of 64717764706 is 60746771746.

64717764706 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (64717764703) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 730350 + ... + 814153.

It is an arithmetic number, because the mean of its divisors is an integer number (3600238824).

Almost surely, 2^64717764706 is an apocalyptic number.

64717764706 is a deficient number, since it is larger than the sum of its proper divisors (50489877662).

64717764706 is a wasteful number, since it uses less digits than its factorization.

64717764706 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1544626.

The product of its (nonzero) digits is 8297856, while the sum is 55.

The spelling of 64717764706 in words is "sixty-four billion, seven hundred seventeen million, seven hundred sixty-four thousand, seven hundred six".