171064654657 has 4 divisors (see below), whose sum is σ = 184223474260. Its totient is φ = 157905835056.

The previous prime is 171064654603. The next prime is 171064654679. The reversal of 171064654657 is 756456460171.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 116689876801 + 54374777856 = 341599^2 + 233184^2 .

It is a cyclic number.

It is not a de Polignac number, because 171064654657 - 2¹¹ = 171064652609 is a prime.

It is a super-4 number, since 4×171064654657⁴ (a number of 46 digits) contains 4444 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (171064654687) 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, 6579409782 + ... + 6579409807.

It is an arithmetic number, because the mean of its divisors is an integer number (46055868565).

Almost surely, 2^171064654657 is an apocalyptic number.

It is an amenable number.

171064654657 is a deficient number, since it is larger than the sum of its proper divisors (13158819603).

171064654657 is a wasteful number, since it uses less digits than its factorization.

171064654657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13158819602.

The product of its (nonzero) digits is 4233600, while the sum is 52.

The spelling of 171064654657 in words is "one hundred seventy-one billion, sixty-four million, six hundred fifty-four thousand, six hundred fifty-seven".