168400722120 has 32 divisors (see below), whose sum is σ = 505202166720. Its totient is φ = 44906859200.

The previous prime is 168400722107. The next prime is 168400722223. The reversal of 168400722120 is 21227004861.

168400722120 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 7 ways as a sum of consecutive naturals, for example, 701669556 + ... + 701669795.

It is an arithmetic number, because the mean of its divisors is an integer number (15787567710).

Almost surely, 2^168400722120 is an apocalyptic number.

168400722120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

168400722120 is an abundant number, since it is smaller than the sum of its proper divisors (336801444600).

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

168400722120 is a wasteful number, since it uses less digits than its factorization.

168400722120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1403339365 (or 1403339361 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 33.

Adding to 168400722120 its reverse (21227004861), we get a palindrome (189627726981).

The spelling of 168400722120 in words is "one hundred sixty-eight billion, four hundred million, seven hundred twenty-two thousand, one hundred twenty".