15850463868 has 72 divisors (see below), whose sum is σ = 41243752368. Its totient is φ = 5130298368.

The previous prime is 15850463843. The next prime is 15850463873. The reversal of 15850463868 is 86836405851.

15850463868 is a `hidden beast` number, since 1 + 58 + 50 + 463 + 86 + 8 = 666.

15850463868 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 142255 + ... + 227897.

It is an arithmetic number, because the mean of its divisors is an integer number (572829894).

Almost surely, 2^15850463868 is an apocalyptic number.

15850463868 is a gapful number since it is divisible by the number (18) 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 15850463868, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20621876184).

15850463868 is an abundant number, since it is smaller than the sum of its proper divisors (25393288500).

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

15850463868 is a wasteful number, since it uses less digits than its factorization.

15850463868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85803 (or 85798 counting only the distinct ones).

The product of its (nonzero) digits is 5529600, while the sum is 54.

The spelling of 15850463868 in words is "fifteen billion, eight hundred fifty million, four hundred sixty-three thousand, eight hundred sixty-eight".