16818766527880 has 16 divisors (see below), whose sum is σ = 37842224687820. Its totient is φ = 6727506611136.

The previous prime is 16818766527859. The next prime is 16818766527889. The reversal of 16818766527880 is 8872566781861.

It can be written as a sum of positive squares in 2 ways, for example, as 16696360309924 + 122406217956 = 4086118^2 + 349866^2 .

It is not an unprimeable number, because it can be changed into a prime (16818766527889) 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, 210234581559 + ... + 210234581638.

Almost surely, 2^{16818766527880} is an apocalyptic number.

16818766527880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16818766527880 is an abundant number, since it is smaller than the sum of its proper divisors (21023458159940).

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

16818766527880 is a wasteful number, since it uses less digits than its factorization.

16818766527880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 420469163208 (or 420469163204 counting only the distinct ones).

The product of its (nonzero) digits is 433520640, while the sum is 73.

The spelling of 16818766527880 in words is "sixteen trillion, eight hundred eighteen billion, seven hundred sixty-six million, five hundred twenty-seven thousand, eight hundred eighty".