169121627536 has 15 divisors (see below), whose sum is σ = 327676340523. Its totient is φ = 84559991280.

The previous prime is 169121627531. The next prime is 169121627537. The reversal of 169121627536 is 635726121961.

The square root of 169121627536 is 411244.

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

169121627536 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 169121627536.

It is not an unprimeable number, because it can be changed into a prime (169121627531) by changing a digit.

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 2 ways as a sum of consecutive naturals, for example, 1593571 + ... + 1696381.

Almost surely, 2^169121627536 is an apocalyptic number.

169121627536 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

169121627536 is the 411244-th square number.

It is an amenable number.

169121627536 is a deficient number, since it is larger than the sum of its proper divisors (158554712987).

169121627536 is an frugal number, since it uses more digits than its factorization.

169121627536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 205630 (or 102813 counting only the distinct ones).

The product of its digits is 816480, while the sum is 49.

Multiplying 169121627536 by its sum of digits (49), we get a square (8286959749264 = 2878708²).

The spelling of 169121627536 in words is "one hundred sixty-nine billion, one hundred twenty-one million, six hundred twenty-seven thousand, five hundred thirty-six".