161284843899 has 32 divisors (see below), whose sum is σ = 241153228800. Its totient is φ = 106531243200.

The previous prime is 161284843871. The next prime is 161284843963. The reversal of 161284843899 is 998348482161.

161284843899 is a `hidden beast` number, since 1 + 61 + 2 + 8 + 484 + 3 + 8 + 99 = 666.

It is not a de Polignac number, because 161284843899 - 2¹³ = 161284835707 is a prime.

It is not an unprimeable number, because it can be changed into a prime (161284843099) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1509847 + ... + 1613135.

It is an arithmetic number, because the mean of its divisors is an integer number (7536038400).

Almost surely, 2^161284843899 is an apocalyptic number.

161284843899 is a deficient number, since it is larger than the sum of its proper divisors (79868384901).

161284843899 is a wasteful number, since it uses less digits than its factorization.

161284843899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103832 (or 103826 counting only the distinct ones).

The product of its digits is 23887872, while the sum is 63.

The spelling of 161284843899 in words is "one hundred sixty-one billion, two hundred eighty-four million, eight hundred forty-three thousand, eight hundred ninety-nine".