161244731342199 has 16 divisors (see below), whose sum is σ = 222766990449120. Its totient is φ = 103621495380480.

The previous prime is 161244731342143. The next prime is 161244731342267. The reversal of 161244731342199 is 991243137442161.

It is not a de Polignac number, because 161244731342199 - 2⁴¹ = 159045708086647 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161244731342119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1501881262 + ... + 1501988619.

It is an arithmetic number, because the mean of its divisors is an integer number (13922936903070).

Almost surely, 2^{161244731342199} is an apocalyptic number.

161244731342199 is a deficient number, since it is larger than the sum of its proper divisors (61522259106921).

161244731342199 is a wasteful number, since it uses less digits than its factorization.

161244731342199 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3003870530.

The product of its digits is 7838208, while the sum is 57.

The spelling of 161244731342199 in words is "one hundred sixty-one trillion, two hundred forty-four billion, seven hundred thirty-one million, three hundred forty-two thousand, one hundred ninety-nine".