168820354881212 has 12 divisors (see below), whose sum is σ = 305623056250680. Its totient is φ = 81499481666736.

The previous prime is 168820354881181. The next prime is 168820354881239. The reversal of 168820354881212 is 212188453028861.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 727673943338 + ... + 727673943569.

It is an arithmetic number, because the mean of its divisors is an integer number (25468588020890).

Almost surely, 2^{168820354881212} is an apocalyptic number.

It is an amenable number.

168820354881212 is a deficient number, since it is larger than the sum of its proper divisors (136802701369468).

168820354881212 is a wasteful number, since it uses less digits than its factorization.

168820354881212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1455347886940 (or 1455347886938 counting only the distinct ones).

The product of its (nonzero) digits is 11796480, while the sum is 59.

The spelling of 168820354881212 in words is "one hundred sixty-eight trillion, eight hundred twenty billion, three hundred fifty-four million, eight hundred eighty-one thousand, two hundred twelve".