171379828513 has 4 divisors (see below), whose sum is σ = 173444645808. Its totient is φ = 169315011220.

The previous prime is 171379828481. The next prime is 171379828517. The reversal of 171379828513 is 315828973171.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 171379828513 - 2⁵ = 171379828481 is a prime.

It is a super-2 number, since 2×171379828513² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (171379828517) 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, 1032408523 + ... + 1032408688.

It is an arithmetic number, because the mean of its divisors is an integer number (43361161452).

Almost surely, 2^171379828513 is an apocalyptic number.

It is an amenable number.

171379828513 is a deficient number, since it is larger than the sum of its proper divisors (2064817295).

171379828513 is an equidigital number, since it uses as much as digits as its factorization.

171379828513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2064817294.

The product of its digits is 2540160, while the sum is 55.

The spelling of 171379828513 in words is "one hundred seventy-one billion, three hundred seventy-nine million, eight hundred twenty-eight thousand, five hundred thirteen".