16192991232 has 728 divisors, whose sum is σ = 58013904240. Its totient is φ = 4459069440.

The previous prime is 16192991197. The next prime is 16192991233. The reversal of 16192991232 is 23219929161.

16192991232 is a `hidden beast` number, since 1 + 619 + 2 + 9 + 9 + 1 + 23 + 2 = 666.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16192991233) by changing a digit.

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 55 ways as a sum of consecutive naturals, for example, 558378994 + ... + 558379022.

Almost surely, 2^16192991232 is an apocalyptic number.

16192991232 is a gapful number since it is divisible by the number (12) 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 16192991232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29006952120).

16192991232 is an abundant number, since it is smaller than the sum of its proper divisors (41820913008).

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

16192991232 is an equidigital number, since it uses as much as digits as its factorization.

16192991232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99 (or 62 counting only the distinct ones).

The product of its digits is 104976, while the sum is 45.

The spelling of 16192991232 in words is "sixteen billion, one hundred ninety-two million, nine hundred ninety-one thousand, two hundred thirty-two".