169406328100 has 81 divisors (see below), whose sum is σ = 373039952691. Its totient is φ = 66776361600.

The previous prime is 169406328097. The next prime is 169406328139. The reversal of 169406328100 is 1823604961.

The square root of 169406328100 is 411590.

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

It can be written as a sum of positive squares in 4 ways, for example, as 21267555556 + 148138772544 = 145834^2 + 384888^2 .

It is a super-2 number, since 2×169406328100² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 325155840 + ... + 325156360.

Almost surely, 2^169406328100 is an apocalyptic number.

169406328100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

169406328100 is the 411590-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 169406328100

169406328100 is an abundant number, since it is smaller than the sum of its proper divisors (203633624591).

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

169406328100 is an frugal number, since it uses more digits than its factorization.

169406328100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1214 (or 607 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 40.

The spelling of 169406328100 in words is "one hundred sixty-nine billion, four hundred six million, three hundred twenty-eight thousand, one hundred".