73161143 has 16 divisors (see below), whose sum is σ = 81959040. Its totient is φ = 64744800.

The previous prime is 73161139. The next prime is 73161163. The reversal of 73161143 is 34116137.

It is a cyclic number.

It is not a de Polignac number, because 73161143 - 2² = 73161139 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73161163) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 71288 + ... + 72306.

It is an arithmetic number, because the mean of its divisors is an integer number (5122440).

Almost surely, 2^73161143 is an apocalyptic number.

73161143 is a deficient number, since it is larger than the sum of its proper divisors (8797897).

73161143 is a wasteful number, since it uses less digits than its factorization.

73161143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1198.

The product of its digits is 1512, while the sum is 26.

The square root of 73161143 is about 8553.4287277091. The cubic root of 73161143 is about 418.2412147588.

The spelling of 73161143 in words is "seventy-three million, one hundred sixty-one thousand, one hundred forty-three".