170918379243 has 6 divisors (see below), whose sum is σ = 246882103364. Its totient is φ = 113945586156.

The previous prime is 170918379239. The next prime is 170918379311. The reversal of 170918379243 is 342973819071.

170918379243 is a `hidden beast` number, since 17 + 0 + 9 + 18 + 379 + 243 = 666.

It is not a de Polignac number, because 170918379243 - 2² = 170918379239 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 170918379243.

It is not an unprimeable number, because it can be changed into a prime (170918378243) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 9495465505 + ... + 9495465522.

Almost surely, 2^170918379243 is an apocalyptic number.

170918379243 is a deficient number, since it is larger than the sum of its proper divisors (75963724121).

170918379243 is a wasteful number, since it uses less digits than its factorization.

170918379243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18990931033 (or 18990931030 counting only the distinct ones).

The product of its (nonzero) digits is 2286144, while the sum is 54.

The spelling of 170918379243 in words is "one hundred seventy billion, nine hundred eighteen million, three hundred seventy-nine thousand, two hundred forty-three".