16878416483881 has 4 divisors (see below), whose sum is σ = 17164491339600. Its totient is φ = 16592341628164.

The previous prime is 16878416483867. The next prime is 16878416483891. The reversal of 16878416483881 is 18838461487861.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 16878416483881 - 2⁵ = 16878416483849 is a prime.

It is a super-2 number, since 2×16878416483881² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16878416483891) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 143037427771 + ... + 143037427888.

It is an arithmetic number, because the mean of its divisors is an integer number (4291122834900).

Almost surely, 2^{16878416483881} is an apocalyptic number.

It is an amenable number.

16878416483881 is a deficient number, since it is larger than the sum of its proper divisors (286074855719).

16878416483881 is an equidigital number, since it uses as much as digits as its factorization.

16878416483881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 286074855718.

The product of its digits is 396361728, while the sum is 73.

The spelling of 16878416483881 in words is "sixteen trillion, eight hundred seventy-eight billion, four hundred sixteen million, four hundred eighty-three thousand, eight hundred eighty-one".