16135331850 has 216 divisors, whose sum is σ = 48943390860. Its totient is φ = 3805401600.

The previous prime is 16135331827. The next prime is 16135331869. The reversal of 16135331850 is 5813353161.

16135331850 is a `hidden beast` number, since 1 + 61 + 3 + 533 + 18 + 50 = 666.

It can be written as a sum of positive squares in 6 ways, for example, as 10607558049 + 5527773801 = 102993^2 + 74349^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 107 ways as a sum of consecutive naturals, for example, 2010646 + ... + 2018654.

Almost surely, 2^16135331850 is an apocalyptic number.

16135331850 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 16135331850, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24471695430).

16135331850 is an abundant number, since it is smaller than the sum of its proper divisors (32808059010).

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

16135331850 is a wasteful number, since it uses less digits than its factorization.

16135331850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8086 (or 8067 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 36.

The spelling of 16135331850 in words is "sixteen billion, one hundred thirty-five million, three hundred thirty-one thousand, eight hundred fifty".