11267355681 has 12 divisors (see below), whose sum is σ = 16360281600. Its totient is φ = 7472241720.

The previous prime is 11267355607. The next prime is 11267355691. The reversal of 11267355681 is 18655376211.

11267355681 is a `hidden beast` number, since 1 + 1 + 26 + 73 + 556 + 8 + 1 = 666.

It is not a de Polignac number, because 11267355681 - 2¹⁴ = 11267339297 is a prime.

It is a super-2 number, since 2×11267355681² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11267355691) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3275581 + ... + 3279018.

It is an arithmetic number, because the mean of its divisors is an integer number (1363356800).

Almost surely, 2^11267355681 is an apocalyptic number.

It is an amenable number.

11267355681 is a deficient number, since it is larger than the sum of its proper divisors (5092925919).

11267355681 is a wasteful number, since it uses less digits than its factorization.

11267355681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6554796 (or 6554793 counting only the distinct ones).

The product of its digits is 302400, while the sum is 45.

The spelling of 11267355681 in words is "eleven billion, two hundred sixty-seven million, three hundred fifty-five thousand, six hundred eighty-one".