108281321666 has 16 divisors (see below), whose sum is σ = 185632563840. Its totient is φ = 46404420480.

The previous prime is 108281321641. The next prime is 108281321699. The reversal of 108281321666 is 666123182801.

108281321666 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×108281321666² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 241715 + ... + 524393.

It is an arithmetic number, because the mean of its divisors is an integer number (11602035240).

Almost surely, 2^108281321666 is an apocalyptic number.

108281321666 is a deficient number, since it is larger than the sum of its proper divisors (77351242174).

108281321666 is a wasteful number, since it uses less digits than its factorization.

108281321666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 310049.

The product of its (nonzero) digits is 165888, while the sum is 44.

The spelling of 108281321666 in words is "one hundred eight billion, two hundred eighty-one million, three hundred twenty-one thousand, six hundred sixty-six".