16121171196 has 144 divisors (see below), whose sum is σ = 46638734688. Its totient is φ = 4651315200.

The previous prime is 16121171191. The next prime is 16121171203. The reversal of 16121171196 is 69117112161.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 16121171196.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16121171191) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2232031 + ... + 2239241.

It is an arithmetic number, because the mean of its divisors is an integer number (323880102).

Almost surely, 2^16121171196 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16121171196, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23319367344).

16121171196 is an abundant number, since it is smaller than the sum of its proper divisors (30517563492).

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

16121171196 is a wasteful number, since it uses less digits than its factorization.

16121171196 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7532 (or 7527 counting only the distinct ones).

The product of its digits is 4536, while the sum is 36.

The spelling of 16121171196 in words is "sixteen billion, one hundred twenty-one million, one hundred seventy-one thousand, one hundred ninety-six".