165436550143 has 2 divisors, whose sum is σ = 165436550144. Its totient is φ = 165436550142.

The previous prime is 165436550137. The next prime is 165436550233. The reversal of 165436550143 is 341055634561.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-165436550143 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 165436550143.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (165436550113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82718275071 + 82718275072.

It is an arithmetic number, because the mean of its divisors is an integer number (82718275072).

Almost surely, 2^165436550143 is an apocalyptic number.

165436550143 is a deficient number, since it is larger than the sum of its proper divisors (1).

165436550143 is an equidigital number, since it uses as much as digits as its factorization.

165436550143 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648000, while the sum is 43.

The spelling of 165436550143 in words is "one hundred sixty-five billion, four hundred thirty-six million, five hundred fifty thousand, one hundred forty-three".