168073703990 has 48 divisors (see below), whose sum is σ = 321469435584. Its totient is φ = 63256320000.

The previous prime is 168073703929. The next prime is 168073704047. The reversal of 168073703990 is 99307370861.

It is a happy number.

168073703990 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 23 ways as a sum of consecutive naturals, for example, 13724270 + ... + 13736510.

It is an arithmetic number, because the mean of its divisors is an integer number (6697279908).

Almost surely, 2^168073703990 is an apocalyptic number.

168073703990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

168073703990 is a deficient number, since it is larger than the sum of its proper divisors (153395731594).

168073703990 is a wasteful number, since it uses less digits than its factorization.

168073703990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17033 (or 17016 counting only the distinct ones).

The product of its (nonzero) digits is 1714608, while the sum is 53.

The spelling of 168073703990 in words is "one hundred sixty-eight billion, seventy-three million, seven hundred three thousand, nine hundred ninety".