16534256227818 has 16 divisors (see below), whose sum is σ = 37792585663680. Its totient is φ = 4724073207936.

The previous prime is 16534256227777. The next prime is 16534256227883. The reversal of 16534256227818 is 81872265243561.

It is a happy number.

It is a super-2 number, since 2×16534256227818² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 196836383623 + ... + 196836383706.

It is an arithmetic number, because the mean of its divisors is an integer number (2362036603980).

Almost surely, 2^{16534256227818} is an apocalyptic number.

16534256227818 is an abundant number, since it is smaller than the sum of its proper divisors (21258329435862).

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

16534256227818 is a wasteful number, since it uses less digits than its factorization.

16534256227818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 393672767341.

The product of its digits is 38707200, while the sum is 60.

The spelling of 16534256227818 in words is "sixteen trillion, five hundred thirty-four billion, two hundred fifty-six million, two hundred twenty-seven thousand, eight hundred eighteen".