168800309550 has 72 divisors (see below), whose sum is σ = 454562915040. Its totient is φ = 44908924800.

The previous prime is 168800309549. The next prime is 168800309563. The reversal of 168800309550 is 55903008861.

168800309550 is a `hidden beast` number, since 1 + 68 + 8 + 0 + 0 + 30 + 9 + 550 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a junction number, because it is equal to n+sod(n) for n = 168800309496 and 168800309505.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 241215 + ... + 629114.

It is an arithmetic number, because the mean of its divisors is an integer number (6313373820).

Almost surely, 2^168800309550 is an apocalyptic number.

168800309550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

168800309550 is an abundant number, since it is smaller than the sum of its proper divisors (285762605490).

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

168800309550 is a wasteful number, since it uses less digits than its factorization.

168800309550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 870778 (or 870770 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 45.

The spelling of 168800309550 in words is "one hundred sixty-eight billion, eight hundred million, three hundred nine thousand, five hundred fifty".