161100600 has 48 divisors (see below), whose sum is σ = 499413720. Its totient is φ = 42960000.

The previous prime is 161100587. The next prime is 161100623. The reversal of 161100600 is 6001161.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 161100600.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 133651 + ... + 134850.

Almost surely, 2^161100600 is an apocalyptic number.

161100600 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

161100600 is an abundant number, since it is smaller than the sum of its proper divisors (338313120).

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

161100600 is a wasteful number, since it uses less digits than its factorization.

161100600 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 268520 (or 268511 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 15.

The square root of 161100600 is about 12692.5411167347. The cubic root of 161100600 is about 544.1254666631.

Adding to 161100600 its reverse (6001161), we get a palindrome (167101761).

The spelling of 161100600 in words is "one hundred sixty-one million, one hundred thousand, six hundred".