16131997874916 has 288 divisors, whose sum is σ = 51687118479360. Its totient is φ = 4120367097600.

The previous prime is 16131997874879. The next prime is 16131997874917. The reversal of 16131997874916 is 61947879913161.

16131997874916 is a `hidden beast` number, since 1 + 61 + 3 + 1 + 9 + 9 + 78 + 7 + 491 + 6 = 666.

It is not an unprimeable number, because it can be changed into a prime (16131997874917) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 804698805 + ... + 804718851.

Almost surely, 2^{16131997874916} 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 16131997874916, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25843559239680).

16131997874916 is an abundant number, since it is smaller than the sum of its proper divisors (35555120604444).

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

16131997874916 is a wasteful number, since it uses less digits than its factorization.

16131997874916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24895 (or 24890 counting only the distinct ones).

The product of its digits is 123451776, while the sum is 72.

The spelling of 16131997874916 in words is "sixteen trillion, one hundred thirty-one billion, nine hundred ninety-seven million, eight hundred seventy-four thousand, nine hundred sixteen".