161896963200 has 1536 divisors, whose sum is σ = 692098560000. Its totient is φ = 32407879680.

The previous prime is 161896963183. The next prime is 161896963289. The reversal of 161896963200 is 2369698161.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 1086556726 + ... + 1086556874.

It is an arithmetic number, because the mean of its divisors is an integer number (450585000).

Almost surely, 2^161896963200 is an apocalyptic number.

161896963200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 161896963200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (346049280000).

161896963200 is an abundant number, since it is smaller than the sum of its proper divisors (530201596800).

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

161896963200 is a wasteful number, since it uses less digits than its factorization.

161896963200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 262 (or 245 counting only the distinct ones).

The product of its (nonzero) digits is 839808, while the sum is 51.

The spelling of 161896963200 in words is "one hundred sixty-one billion, eight hundred ninety-six million, nine hundred sixty-three thousand, two hundred".