269796097561 has 9 divisors (see below), whose sum is σ = 279435816543. Its totient is φ = 260478240120.

The previous prime is 269796097559. The next prime is 269796097579. The reversal of 269796097561 is 165790697962.

The square root of 269796097561 is 519419.

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

It can be written as a sum of positive squares in only one way, i.e., 141474529161 + 128321568400 = 376131^2 + 358220^2 .

It is not a de Polignac number, because 269796097561 - 2¹ = 269796097559 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (269796097511) 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, 15054196 + ... + 15072106.

Almost surely, 2^269796097561 is an apocalyptic number.

269796097561 is the 519419-th square number.

269796097561 is the 259710-th centered octagonal number.

It is an amenable number.

269796097561 is a deficient number, since it is larger than the sum of its proper divisors (9639718982).

269796097561 is an frugal number, since it uses more digits than its factorization.

269796097561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35880 (or 17940 counting only the distinct ones).

The product of its (nonzero) digits is 77157360, while the sum is 67.

The spelling of 269796097561 in words is "two hundred sixty-nine billion, seven hundred ninety-six million, ninety-seven thousand, five hundred sixty-one".