16854120831 has 16 divisors (see below), whose sum is σ = 22743957600. Its totient is φ = 11100592128.

The previous prime is 16854120809. The next prime is 16854120839. The reversal of 16854120831 is 13802145861.

It is not a de Polignac number, because 16854120831 - 2¹¹ = 16854118783 is a prime.

It is a super-2 number, since 2×16854120831² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 16854120831.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16854120839) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 114685 + ... + 216473.

It is an arithmetic number, because the mean of its divisors is an integer number (1421497350).

Almost surely, 2^16854120831 is an apocalyptic number.

16854120831 is a deficient number, since it is larger than the sum of its proper divisors (5889836769).

16854120831 is a wasteful number, since it uses less digits than its factorization.

16854120831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102458.

The product of its (nonzero) digits is 46080, while the sum is 39.

The spelling of 16854120831 in words is "sixteen billion, eight hundred fifty-four million, one hundred twenty thousand, eight hundred thirty-one".