171264361258 has 4 divisors (see below), whose sum is σ = 256896541890. Its totient is φ = 85632180628.

The previous prime is 171264361189. The next prime is 171264361291. The reversal of 171264361258 is 852163462171.

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

It can be written as a sum of positive squares in only one way, i.e., 171232922809 + 31438449 = 413803^2 + 5607^2 .

It is a super-2 number, since 2×171264361258² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42816090313 + ... + 42816090316.

Almost surely, 2^171264361258 is an apocalyptic number.

171264361258 is a deficient number, since it is larger than the sum of its proper divisors (85632180632).

171264361258 is an equidigital number, since it uses as much as digits as its factorization.

171264361258 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85632180631.

The product of its digits is 483840, while the sum is 46.

The spelling of 171264361258 in words is "one hundred seventy-one billion, two hundred sixty-four million, three hundred sixty-one thousand, two hundred fifty-eight".