11367133681 has 4 divisors (see below), whose sum is σ = 11442412864. Its totient is φ = 11291854500.

The previous prime is 11367133651. The next prime is 11367133693. The reversal of 11367133681 is 18633176311.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 11367133681 - 2⁵ = 11367133649 is a prime.

It is a super-3 number, since 3×11367133681³ (a number of 31 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11367133651) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37639365 + ... + 37639666.

It is an arithmetic number, because the mean of its divisors is an integer number (2860603216).

Almost surely, 2^11367133681 is an apocalyptic number.

It is an amenable number.

11367133681 is a deficient number, since it is larger than the sum of its proper divisors (75279183).

11367133681 is an equidigital number, since it uses as much as digits as its factorization.

11367133681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75279182.

The product of its digits is 54432, while the sum is 40.

The spelling of 11367133681 in words is "eleven billion, three hundred sixty-seven million, one hundred thirty-three thousand, six hundred eighty-one".