11396234940561 has 27 divisors (see below), whose sum is σ = 16555339638513. Its totient is φ = 7554299578560.

The previous prime is 11396234940547. The next prime is 11396234940577. The reversal of 11396234940561 is 16504943269311.

The square root of 11396234940561 is 3375831.

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

11396234940561 is a `hidden beast` number, since 1 + 1 + 3 + 9 + 6 + 2 + 34 + 9 + 40 + 561 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 2015221572225 + 9381013368336 = 1419585^2 + 3062844^2 .

It is not a de Polignac number, because 11396234940561 - 2⁹ = 11396234940049 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11396234940498 and 11396234940507.

It is not an unprimeable number, because it can be changed into a prime (11396234940661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 1833073125 + ... + 1833079341.

Almost surely, 2^{11396234940561} is an apocalyptic number.

11396234940561 is the 3375831-st square number.

11396234940561 is the 1687916-th centered octagonal number.

It is an amenable number.

11396234940561 is a deficient number, since it is larger than the sum of its proper divisors (5159104697952).

11396234940561 is an frugal number, since it uses more digits than its factorization.

11396234940561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12802 (or 6401 counting only the distinct ones).

The product of its (nonzero) digits is 4199040, while the sum is 54.

The spelling of 11396234940561 in words is "eleven trillion, three hundred ninety-six billion, two hundred thirty-four million, nine hundred forty thousand, five hundred sixty-one".