11263789161 has 27 divisors (see below), whose sum is σ = 17291578213. Its totient is φ = 7064079360.

The previous prime is 11263789129. The next prime is 11263789177. The reversal of 11263789161 is 16198736211.

The square root of 11263789161 is 106131.

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

11263789161 is a `hidden beast` number, since 1 + 1 + 2 + 637 + 8 + 9 + 1 + 6 + 1 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 334341225 + 10929447936 = 18285^2 + 104544^2 .

It is not a de Polignac number, because 11263789161 - 2⁵ = 11263789129 is a prime.

It is a super-2 number, since 2×11263789161² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11263789661) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 5411641 + ... + 5413721.

Almost surely, 2^11263789161 is an apocalyptic number.

11263789161 is the 106131-st square number.

11263789161 is the 53066-th centered octagonal number.

It is an amenable number.

11263789161 is a deficient number, since it is larger than the sum of its proper divisors (6027789052).

11263789161 is an frugal number, since it uses more digits than its factorization.

11263789161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4202 (or 2101 counting only the distinct ones).

The product of its digits is 108864, while the sum is 45.

The spelling of 11263789161 in words is "eleven billion, two hundred sixty-three million, seven hundred eighty-nine thousand, one hundred sixty-one".