161982209592 has 64 divisors (see below), whose sum is σ = 514229241600. Its totient is φ = 46280630880.

The previous prime is 161982209551. The next prime is 161982209629. The reversal of 161982209592 is 295902289161.

161982209592 is a `hidden beast` number, since 16 + 19 + 8 + 2 + 20 + 9 + 592 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 53564034 + ... + 53567057.

It is an arithmetic number, because the mean of its divisors is an integer number (8034831900).

Almost surely, 2^161982209592 is an apocalyptic number.

161982209592 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

161982209592 is an abundant number, since it is smaller than the sum of its proper divisors (352247032008).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

161982209592 is a wasteful number, since it uses less digits than its factorization.

161982209592 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107131113 (or 107131103 counting only the distinct ones).

The product of its (nonzero) digits is 1399680, while the sum is 54.

The spelling of 161982209592 in words is "one hundred sixty-one billion, nine hundred eighty-two million, two hundred nine thousand, five hundred ninety-two".