165143135236243 has 8 divisors (see below), whose sum is σ = 165866855268080. Its totient is φ = 164419437561120.

The previous prime is 165143135236153. The next prime is 165143135236253. The reversal of 165143135236243 is 342632531341561.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-165143135236243 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (165143135236253) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9303421 + ... + 20416657.

It is an arithmetic number, because the mean of its divisors is an integer number (20733356908510).

Almost surely, 2^{165143135236243} is an apocalyptic number.

165143135236243 is a deficient number, since it is larger than the sum of its proper divisors (723720031837).

165143135236243 is a wasteful number, since it uses less digits than its factorization.

165143135236243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11178357.

The product of its digits is 4665600, while the sum is 49.

The spelling of 165143135236243 in words is "one hundred sixty-five trillion, one hundred forty-three billion, one hundred thirty-five million, two hundred thirty-six thousand, two hundred forty-three".