64613421171 has 32 divisors (see below), whose sum is σ = 103102413120. Its totient is φ = 39756137472.

The previous prime is 64613421157. The next prime is 64613421181. The reversal of 64613421171 is 17112431646.

64613421171 is a `hidden beast` number, since 6 + 4 + 61 + 3 + 421 + 171 = 666.

It is not a de Polignac number, because 64613421171 - 2¹⁰ = 64613420147 is a prime.

It is a super-2 number, since 2×64613421171² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (64613421181) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3927555 + ... + 3943971.

It is an arithmetic number, because the mean of its divisors is an integer number (3221950410).

Almost surely, 2^64613421171 is an apocalyptic number.

64613421171 is a deficient number, since it is larger than the sum of its proper divisors (38488991949).

64613421171 is a wasteful number, since it uses less digits than its factorization.

64613421171 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27652 (or 27646 counting only the distinct ones).

The product of its digits is 24192, while the sum is 36.

The spelling of 64613421171 in words is "sixty-four billion, six hundred thirteen million, four hundred twenty-one thousand, one hundred seventy-one".