168535368500 has 24 divisors (see below), whose sum is σ = 368081245896. Its totient is φ = 67414147200.

The previous prime is 168535368479. The next prime is 168535368523. The reversal of 168535368500 is 5863535861.

It can be written as a sum of positive squares in 4 ways, for example, as 22956492196 + 145578876304 = 151514^2 + 381548^2 .

It is a Harshad number since it is a multiple of its sum of digits (50).

It is a congruent number.

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, 168534869 + ... + 168535868.

It is an arithmetic number, because the mean of its divisors is an integer number (15336718579).

Almost surely, 2^168535368500 is an apocalyptic number.

168535368500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

168535368500 is an abundant number, since it is smaller than the sum of its proper divisors (199545877396).

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

168535368500 is a wasteful number, since it uses less digits than its factorization.

168535368500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 337070756 (or 337070744 counting only the distinct ones).

The product of its (nonzero) digits is 2592000, while the sum is 50.

The spelling of 168535368500 in words is "one hundred sixty-eight billion, five hundred thirty-five million, three hundred sixty-eight thousand, five hundred".