169657345966564 has 27 divisors (see below), whose sum is σ = 305143296863643. Its totient is φ = 82535537236608.

The previous prime is 169657345966543. The next prime is 169657345966567. The reversal of 169657345966564 is 465669543756961.

The square root of 169657345966564 is 13025258.

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

169657345966564 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 27119535200164 + 142537810766400 = 5207642^2 + 11938920^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (169657345966567) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 963781084 + ... + 963957100.

Almost surely, 2^{169657345966564} is an apocalyptic number.

169657345966564 is the 13025258-th square number.

It is an amenable number.

169657345966564 is a deficient number, since it is larger than the sum of its proper divisors (135485950897079).

169657345966564 is an frugal number, since it uses more digits than its factorization.

169657345966564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 352112 (or 176056 counting only the distinct ones).

The product of its digits is 26453952000, while the sum is 82.

The spelling of 169657345966564 in words is "one hundred sixty-nine trillion, six hundred fifty-seven billion, three hundred forty-five million, nine hundred sixty-six thousand, five hundred sixty-four".