16191137250 has 128 divisors (see below), whose sum is σ = 46352517120. Its totient is φ = 4178304000.

The previous prime is 16191137231. The next prime is 16191137323. The reversal of 16191137250 is 5273119161.

It is a happy number.

16191137250 is a `hidden beast` number, since 1 + 619 + 1 + 1 + 37 + 2 + 5 + 0 = 666.

16191137250 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 170562 + ... + 247938.

It is an arithmetic number, because the mean of its divisors is an integer number (362129040).

Almost surely, 2^16191137250 is an apocalyptic number.

16191137250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 16191137250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23176258560).

16191137250 is an abundant number, since it is smaller than the sum of its proper divisors (30161379870).

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

16191137250 is a wasteful number, since it uses less digits than its factorization.

16191137250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77434 (or 77418 counting only the distinct ones).

The product of its (nonzero) digits is 11340, while the sum is 36.

The spelling of 16191137250 in words is "sixteen billion, one hundred ninety-one million, one hundred thirty-seven thousand, two hundred fifty".