168270843523 has 4 divisors (see below), whose sum is σ = 169012125000. Its totient is φ = 167529562048.

The previous prime is 168270843493. The next prime is 168270843527. The reversal of 168270843523 is 325348072861.

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 168270843523 - 2¹³ = 168270835331 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (168270843527) 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, 370640398 + ... + 370640851.

It is an arithmetic number, because the mean of its divisors is an integer number (42253031250).

Almost surely, 2^168270843523 is an apocalyptic number.

168270843523 is a deficient number, since it is larger than the sum of its proper divisors (741281477).

168270843523 is an equidigital number, since it uses as much as digits as its factorization.

168270843523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 741281476.

The product of its (nonzero) digits is 1935360, while the sum is 49.

The spelling of 168270843523 in words is "one hundred sixty-eight billion, two hundred seventy million, eight hundred forty-three thousand, five hundred twenty-three".