64679705171 has 8 divisors (see below), whose sum is σ = 68316274320. Its totient is φ = 61066373472.

The previous prime is 64679705113. The next prime is 64679705177. The reversal of 64679705171 is 17150797646.

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 64679705171 - 2¹⁸ = 64679443027 is a prime.

It is a super-2 number, since 2×64679705171² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64679705177) 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, 5803640 + ... + 5814773.

It is an arithmetic number, because the mean of its divisors is an integer number (8539534290).

Almost surely, 2^64679705171 is an apocalyptic number.

64679705171 is a deficient number, since it is larger than the sum of its proper divisors (3636569149).

64679705171 is a wasteful number, since it uses less digits than its factorization.

64679705171 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11618725.

The product of its (nonzero) digits is 2222640, while the sum is 53.

The spelling of 64679705171 in words is "sixty-four billion, six hundred seventy-nine million, seven hundred five thousand, one hundred seventy-one".