161103349900 has 36 divisors (see below), whose sum is σ = 350312227888. Its totient is φ = 64308997440.

The previous prime is 161103349873. The next prime is 161103349907. The reversal of 161103349900 is 9943301161.

It is a self number, because there is not a number n which added to its sum of digits gives 161103349900.

It is not an unprimeable number, because it can be changed into a prime (161103349907) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1605339 + ... + 1702738.

Almost surely, 2^161103349900 is an apocalyptic number.

161103349900 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

161103349900 is an abundant number, since it is smaller than the sum of its proper divisors (189208877988).

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

161103349900 is a wasteful number, since it uses less digits than its factorization.

161103349900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3308578 (or 3308571 counting only the distinct ones).

The product of its (nonzero) digits is 17496, while the sum is 37.

The spelling of 161103349900 in words is "one hundred sixty-one billion, one hundred three million, three hundred forty-nine thousand, nine hundred".