161284843900 has 54 divisors (see below), whose sum is σ = 361328144352. Its totient is φ = 62424187200.

The previous prime is 161284843871. The next prime is 161284843963. The reversal of 161284843900 is 9348482161.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 22356694 + ... + 22363906.

Almost surely, 2^161284843900 is an apocalyptic number.

161284843900 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

161284843900 is an abundant number, since it is smaller than the sum of its proper divisors (200043300452).

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

161284843900 is an frugal number, since it uses more digits than its factorization.

161284843900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14471 (or 7251 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 46.

The spelling of 161284843900 in words is "one hundred sixty-one billion, two hundred eighty-four million, eight hundred forty-three thousand, nine hundred".