171860614243 has 4 divisors (see below), whose sum is σ = 172252096720. Its totient is φ = 171469131768.

The previous prime is 171860614231. The next prime is 171860614301. The reversal of 171860614243 is 342416068171.

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

It is a cyclic number.

It is not a de Polignac number, because 171860614243 - 2²¹ = 171858517091 is a prime.

It is a super-4 number, since 4×171860614243⁴ (a number of 46 digits) contains 4444 as substring.

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 171860614243.

It is not an unprimeable number, because it can be changed into a prime (171860914243) 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, 195740580 + ... + 195741457.

It is an arithmetic number, because the mean of its divisors is an integer number (43063024180).

Almost surely, 2^171860614243 is an apocalyptic number.

171860614243 is a deficient number, since it is larger than the sum of its proper divisors (391482477).

171860614243 is an equidigital number, since it uses as much as digits as its factorization.

171860614243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 391482476.

The product of its (nonzero) digits is 193536, while the sum is 43.

The spelling of 171860614243 in words is "one hundred seventy-one billion, eight hundred sixty million, six hundred fourteen thousand, two hundred forty-three".