161900306332 has 12 divisors (see below), whose sum is σ = 283345329960. Its totient is φ = 80944497776.

The previous prime is 161900306317. The next prime is 161900306339. The reversal of 161900306332 is 233603009161.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161900306339) 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, 1349107 + ... + 1464202.

It is an arithmetic number, because the mean of its divisors is an integer number (23612110830).

Almost surely, 2^161900306332 is an apocalyptic number.

It is an amenable number.

161900306332 is a deficient number, since it is larger than the sum of its proper divisors (121445023628).

161900306332 is a wasteful number, since it uses less digits than its factorization.

161900306332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2827700 (or 2827698 counting only the distinct ones).

The product of its (nonzero) digits is 17496, while the sum is 34.

The spelling of 161900306332 in words is "one hundred sixty-one billion, nine hundred million, three hundred six thousand, three hundred thirty-two".