161133900196 has 6 divisors (see below), whose sum is σ = 281984325350. Its totient is φ = 80566950096.

The previous prime is 161133900163. The next prime is 161133900197. The reversal of 161133900196 is 691009331161.

It can be written as a sum of positive squares in only one way, i.e., 98000302500 + 63133597696 = 313050^2 + 251264^2 .

It is not an unprimeable number, because it can be changed into a prime (161133900197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20141737521 + ... + 20141737528.

Almost surely, 2^161133900196 is an apocalyptic number.

It is an amenable number.

161133900196 is a deficient number, since it is larger than the sum of its proper divisors (120850425154).

161133900196 is a wasteful number, since it uses less digits than its factorization.

161133900196 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40283475053 (or 40283475051 counting only the distinct ones).

The product of its (nonzero) digits is 26244, while the sum is 40.

The spelling of 161133900196 in words is "one hundred sixty-one billion, one hundred thirty-three million, nine hundred thousand, one hundred ninety-six".