655501005171 has 24 divisors (see below), whose sum is σ = 972657486320. Its totient is φ = 425088150336.

The previous prime is 655501005161. The next prime is 655501005179. The reversal of 655501005171 is 171500105556.

It is a happy number.

It is not a de Polignac number, because 655501005171 - 2¹¹ = 655501003123 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (655501005179) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1171641 + ... + 1638213.

Almost surely, 2^655501005171 is an apocalyptic number.

655501005171 is a deficient number, since it is larger than the sum of its proper divisors (317156481149).

655501005171 is a wasteful number, since it uses less digits than its factorization.

655501005171 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 470835 (or 470832 counting only the distinct ones).

The product of its (nonzero) digits is 26250, while the sum is 36.

The spelling of 655501005171 in words is "six hundred fifty-five billion, five hundred one million, five thousand, one hundred seventy-one".