64171123 has 4 divisors (see below), whose sum is σ = 64230928. Its totient is φ = 64111320.

The previous prime is 64171117. The next prime is 64171153. The reversal of 64171123 is 32117146.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32117146 = 2 ⋅16058573.

It is a cyclic number.

It is not a de Polignac number, because 64171123 - 2⁵ = 64171091 is a prime.

It is a super-2 number, since 2×64171123² = 8235866054162258, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64171103) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28263 + ... + 30448.

It is an arithmetic number, because the mean of its divisors is an integer number (16057732).

Almost surely, 2^64171123 is an apocalyptic number.

64171123 is a deficient number, since it is larger than the sum of its proper divisors (59805).

64171123 is a wasteful number, since it uses less digits than its factorization.

64171123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59804.

The product of its digits is 1008, while the sum is 25.

The square root of 64171123 is about 8010.6880478521. The cubic root of 64171123 is about 400.3561889794.

Adding to 64171123 its reverse (32117146), we get a palindrome (96288269).

The spelling of 64171123 in words is "sixty-four million, one hundred seventy-one thousand, one hundred twenty-three".