64717723713 has 8 divisors (see below), whose sum is σ = 87329940768. Its totient is φ = 42625327904.

The previous prime is 64717723709. The next prime is 64717723723. The reversal of 64717723713 is 31732771746.

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 64717723713 - 2² = 64717723709 is a prime.

It is not an unprimeable number, because it can be changed into a prime (64717723723) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 129955020 + ... + 129955517.

It is an arithmetic number, because the mean of its divisors is an integer number (10916242596).

Almost surely, 2^64717723713 is an apocalyptic number.

It is an amenable number.

64717723713 is a deficient number, since it is larger than the sum of its proper divisors (22612217055).

64717723713 is a wasteful number, since it uses less digits than its factorization.

64717723713 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 259910623.

The product of its digits is 1037232, while the sum is 48.

The spelling of 64717723713 in words is "sixty-four billion, seven hundred seventeen million, seven hundred twenty-three thousand, seven hundred thirteen".