11081182403281 has 9 divisors (see below), whose sum is σ = 11166856750569. Its totient is φ = 10996160475300.

The previous prime is 11081182403251. The next prime is 11081182403287. The reversal of 11081182403281 is 18230428118011.

It is a happy number.

The square root of 11081182403281 is 3328841.

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

It is not a de Polignac number, because 11081182403281 - 2²¹ = 11081180306129 is a prime.

It is a super-2 number, since 2×11081182403281² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11081182403287) 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 8 ways as a sum of consecutive naturals, for example, 436065466 + ... + 436090876.

Almost surely, 2^{11081182403281} is an apocalyptic number.

11081182403281 is the 3328841-st square number.

11081182403281 is the 1664421-st centered octagonal number.

It is an amenable number.

11081182403281 is a deficient number, since it is larger than the sum of its proper divisors (85674347288).

11081182403281 is an frugal number, since it uses more digits than its factorization.

11081182403281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51084 (or 25542 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 40.

The spelling of 11081182403281 in words is "eleven trillion, eighty-one billion, one hundred eighty-two million, four hundred three thousand, two hundred eighty-one".