11081562361 has 3 divisors (see below), whose sum is σ = 11081667631. Its totient is φ = 11081457092.

The previous prime is 11081562313. The next prime is 11081562407. The reversal of 11081562361 is 16326518011.

The square root of 11081562361 is 105269.

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

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 1093558761 + 9988003600 = 33069^2 + 99940^2 .

It is not a de Polignac number, because 11081562361 - 2¹⁷ = 11081431289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11081565361) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 52635 + ... + 157903.

Almost surely, 2^11081562361 is an apocalyptic number.

11081562361 is the 105269-th square number.

11081562361 is the 52635-th centered octagonal number.

It is an amenable number.

11081562361 is a deficient number, since it is larger than the sum of its proper divisors (105270).

11081562361 is an frugal number, since it uses more digits than its factorization.

11081562361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210538 (or 105269 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 34.

The spelling of 11081562361 in words is "eleven billion, eighty-one million, five hundred sixty-two thousand, three hundred sixty-one".