161432683591800 has 96 divisors (see below), whose sum is σ = 500478659815680. Its totient is φ = 43045503523200.

The previous prime is 161432683591721. The next prime is 161432683591801. The reversal of 161432683591800 is 8195386234161.

It is a super-2 number, since 2×161432683591800² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161432683591801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1984512 + ... + 18077711.

It is an arithmetic number, because the mean of its divisors is an integer number (5213319373080).

Almost surely, 2^{161432683591800} is an apocalyptic number.

161432683591800 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

161432683591800 is an abundant number, since it is smaller than the sum of its proper divisors (339045976223880).

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

161432683591800 is a wasteful number, since it uses less digits than its factorization.

161432683591800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20075653 (or 20075644 counting only the distinct ones).

The product of its (nonzero) digits is 7464960, while the sum is 57.

The spelling of 161432683591800 in words is "one hundred sixty-one trillion, four hundred thirty-two billion, six hundred eighty-three million, five hundred ninety-one thousand, eight hundred".