161803845814 has 48 divisors (see below), whose sum is σ = 275676493824. Its totient is φ = 71057157600.

The previous prime is 161803845809. The next prime is 161803845817. The reversal of 161803845814 is 418548308161.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161803845817) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1430349 + ... + 1539319.

It is an arithmetic number, because the mean of its divisors is an integer number (5743260288).

Almost surely, 2^161803845814 is an apocalyptic number.

161803845814 is a deficient number, since it is larger than the sum of its proper divisors (113872648010).

161803845814 is a wasteful number, since it uses less digits than its factorization.

161803845814 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109213 (or 109200 counting only the distinct ones).

The product of its (nonzero) digits is 737280, while the sum is 49.

The spelling of 161803845814 in words is "one hundred sixty-one billion, eight hundred three million, eight hundred forty-five thousand, eight hundred fourteen".