16866882780 has 48 divisors (see below), whose sum is σ = 51520662144. Its totient is φ = 4088941120.

The previous prime is 16866882779. The next prime is 16866882839. The reversal of 16866882780 is 8728866861.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12777282 + ... + 12778601.

It is an arithmetic number, because the mean of its divisors is an integer number (1073347128).

Almost surely, 2^16866882780 is an apocalyptic number.

16866882780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16866882780 is an abundant number, since it is smaller than the sum of its proper divisors (34653779364).

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

16866882780 is a wasteful number, since it uses less digits than its factorization.

16866882780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25555906 (or 25555904 counting only the distinct ones).

The product of its (nonzero) digits is 12386304, while the sum is 60.

The spelling of 16866882780 in words is "sixteen billion, eight hundred sixty-six million, eight hundred eighty-two thousand, seven hundred eighty".