16936969857025 has 27 divisors (see below), whose sum is σ = 21050614206921. Its totient is φ = 13518183194880.

The previous prime is 16936969857019. The next prime is 16936969857029. The reversal of 16936969857025 is 52075896963961.

The square root of 16936969857025 is 4115455.

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 904281177969 + 16032688679056 = 950937^2 + 4004084^2 .

It is not a de Polignac number, because 16936969857025 - 2¹¹ = 16936969854977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16936969857029) 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 26 ways as a sum of consecutive naturals, for example, 13560423601 + ... + 13560424849.

Almost surely, 2^{16936969857025} is an apocalyptic number.

16936969857025 is the 4115455-th square number.

16936969857025 is the 2057728-th centered octagonal number.

It is an amenable number.

16936969857025 is a deficient number, since it is larger than the sum of its proper divisors (4113644349896).

16936969857025 is an frugal number, since it uses more digits than its factorization.

16936969857025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3826 (or 1913 counting only the distinct ones).

The product of its (nonzero) digits is 1322697600, while the sum is 76.

The spelling of 16936969857025 in words is "sixteen trillion, nine hundred thirty-six billion, nine hundred sixty-nine million, eight hundred fifty-seven thousand, twenty-five".