161477267200 has 108 divisors (see below), whose sum is σ = 401445790200. Its totient is φ = 64305786880.

The previous prime is 161477267179. The next prime is 161477267201. The reversal of 161477267200 is 2762774161.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161477267201) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1397226 + ... + 1508374.

It is an arithmetic number, because the mean of its divisors is an integer number (3717090650).

Almost surely, 2^161477267200 is an apocalyptic number.

161477267200 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 161477267200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (200722895100).

161477267200 is an abundant number, since it is smaller than the sum of its proper divisors (239968523000).

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

161477267200 is a wasteful number, since it uses less digits than its factorization.

161477267200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111402 (or 111383 counting only the distinct ones).

The product of its (nonzero) digits is 197568, while the sum is 43.

The spelling of 161477267200 in words is "one hundred sixty-one billion, four hundred seventy-seven million, two hundred sixty-seven thousand, two hundred".