15601601100 has 144 divisors (see below), whose sum is σ = 47865686400. Its totient is φ = 3912491520.

The previous prime is 15601601089. The next prime is 15601601117. The reversal of 15601601100 is 110610651.

15601601100 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 770911 + ... + 790889.

It is an arithmetic number, because the mean of its divisors is an integer number (332400600).

Almost surely, 2^15601601100 is an apocalyptic number.

15601601100 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 15601601100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23932843200).

15601601100 is an abundant number, since it is smaller than the sum of its proper divisors (32264085300).

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

15601601100 is a wasteful number, since it uses less digits than its factorization.

15601601100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20152 (or 20145 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 21.

The spelling of 15601601100 in words is "fifteen billion, six hundred one million, six hundred one thousand, one hundred".