161338201882 has 64 divisors (see below), whose sum is σ = 286456020480. Its totient is φ = 67186828800.

The previous prime is 161338201841. The next prime is 161338201883. The reversal of 161338201882 is 288102833161.

It is not an unprimeable number, because it can be changed into a prime (161338201883) 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, 21391032 + ... + 21398572.

It is an arithmetic number, because the mean of its divisors is an integer number (4475875320).

Almost surely, 2^161338201882 is an apocalyptic number.

161338201882 is a deficient number, since it is larger than the sum of its proper divisors (125117818598).

161338201882 is a wasteful number, since it uses less digits than its factorization.

161338201882 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8119.

The product of its (nonzero) digits is 110592, while the sum is 43.

The spelling of 161338201882 in words is "one hundred sixty-one billion, three hundred thirty-eight million, two hundred one thousand, eight hundred eighty-two".