161845341936 has 20 divisors (see below), whose sum is σ = 418100466792. Its totient is φ = 53948447296.

The previous prime is 161845341913. The next prime is 161845341937. The reversal of 161845341936 is 639143548161.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161845341937) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1685888931 + ... + 1685889026.

Almost surely, 2^161845341936 is an apocalyptic number.

161845341936 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

161845341936 is an abundant number, since it is smaller than the sum of its proper divisors (256255124856).

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

161845341936 is a wasteful number, since it uses less digits than its factorization.

161845341936 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3371777968 (or 3371777962 counting only the distinct ones).

The product of its digits is 1866240, while the sum is 51.

The spelling of 161845341936 in words is "one hundred sixty-one billion, eight hundred forty-five million, three hundred forty-one thousand, nine hundred thirty-six".