169128150568 has 32 divisors (see below), whose sum is σ = 353284936200. Its totient is φ = 75367450368.

The previous prime is 169128150553. The next prime is 169128150601. The reversal of 169128150568 is 865051821961.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 125881620804 + 43246529764 = 354798^2 + 207958^2 .

It is a Harshad number since it is a multiple of its sum of digits (52).

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, 28035471 + ... + 28041502.

Almost surely, 2^169128150568 is an apocalyptic number.

It is an amenable number.

169128150568 is an abundant number, since it is smaller than the sum of its proper divisors (184156785632).

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

169128150568 is a wasteful number, since it uses less digits than its factorization.

169128150568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56077021 (or 56077017 counting only the distinct ones).

The product of its (nonzero) digits is 1036800, while the sum is 52.

The spelling of 169128150568 in words is "one hundred sixty-nine billion, one hundred twenty-eight million, one hundred fifty thousand, five hundred sixty-eight".