168237605774736 has 135 divisors (see below), whose sum is σ = 472962995787009. Its totient is φ = 55826481897216.

The previous prime is 168237605774713. The next prime is 168237605774747. The reversal of 168237605774736 is 637477506732861.

The square root of 168237605774736 is 12970644.

It is a perfect power (a square), and thus also a powerful number.

168237605774736 is a `hidden beast` number, since 1 + 6 + 8 + 2 + 3 + 7 + 6 + 0 + 577 + 47 + 3 + 6 = 666.

It can be written as a sum of positive squares in only one way, i.e., 34165661619600 + 134071944155136 = 5845140^2 + 11578944^2 .

It is a Harshad number since it is a multiple of its sum of digits (72).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 36265918305 + ... + 36265922943.

Almost surely, 2^{168237605774736} is an apocalyptic number.

168237605774736 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

168237605774736 is the 12970644-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 168237605774736

168237605774736 is an abundant number, since it is smaller than the sum of its proper divisors (304725390012273).

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

168237605774736 is an frugal number, since it uses more digits than its factorization.

168237605774736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9758 (or 4877 counting only the distinct ones).

The product of its (nonzero) digits is 1493614080, while the sum is 72.

The spelling of 168237605774736 in words is "one hundred sixty-eight trillion, two hundred thirty-seven billion, six hundred five million, seven hundred seventy-four thousand, seven hundred thirty-six".