161550613200 has 120 divisors (see below), whose sum is σ = 535345423200. Its totient is φ = 41594631680.

The previous prime is 161550613177. The next prime is 161550613223. The reversal of 161550613200 is 2316055161.

161550613200 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (161550613177) and next prime (161550613223).

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2286330 + ... + 2355929.

It is an arithmetic number, because the mean of its divisors is an integer number (4461211860).

Almost surely, 2^161550613200 is an apocalyptic number.

161550613200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

161550613200 is an abundant number, since it is smaller than the sum of its proper divisors (373794810000).

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

161550613200 is a wasteful number, since it uses less digits than its factorization.

161550613200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4642309 (or 4642298 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 30.

Adding to 161550613200 its reverse (2316055161), we get a palindrome (163866668361).

The spelling of 161550613200 in words is "one hundred sixty-one billion, five hundred fifty million, six hundred thirteen thousand, two hundred".