161826108818 has 48 divisors (see below), whose sum is σ = 281138464320. Its totient is φ = 69615612000.

The previous prime is 161826108817. The next prime is 161826108833. The reversal of 161826108818 is 818801628161.

It is not an unprimeable number, because it can be changed into a prime (161826108811) 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, 4677323 + ... + 4711793.

It is an arithmetic number, because the mean of its divisors is an integer number (5857051340).

Almost surely, 2^161826108818 is an apocalyptic number.

161826108818 is a deficient number, since it is larger than the sum of its proper divisors (119312355502).

161826108818 is a wasteful number, since it uses less digits than its factorization.

161826108818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35535 (or 35524 counting only the distinct ones).

The product of its (nonzero) digits is 294912, while the sum is 50.

The spelling of 161826108818 in words is "one hundred sixty-one billion, eight hundred twenty-six million, one hundred eight thousand, eight hundred eighteen".