64717777713 has 8 divisors (see below), whose sum is σ = 90831968800. Its totient is φ = 40874385888.

The previous prime is 64717777711. The next prime is 64717777739. The reversal of 64717777713 is 31777771746.

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

It is not a de Polignac number, because 64717777713 - 2¹ = 64717777711 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (57), and also a Moran number because the ratio is a prime number: 1135399609 = 64717777713 / (6 + 4 + 7 + 1 + 7 + 7 + 7 + 7 + 7 + 1 + 3).

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (64717777711) 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, 567699748 + ... + 567699861.

It is an arithmetic number, because the mean of its divisors is an integer number (11353996100).

Almost surely, 2^64717777713 is an apocalyptic number.

It is an amenable number.

64717777713 is a deficient number, since it is larger than the sum of its proper divisors (26114191087).

64717777713 is a wasteful number, since it uses less digits than its factorization.

64717777713 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1135399631.

The product of its digits is 8470728, while the sum is 57.

The spelling of 64717777713 in words is "sixty-four billion, seven hundred seventeen million, seven hundred seventy-seven thousand, seven hundred thirteen".