11681182805 has 32 divisors (see below), whose sum is σ = 15075849600. Its totient is φ = 8662781952.

The previous prime is 11681182697. The next prime is 11681182813. The reversal of 11681182805 is 50828118611.

It is a cyclic number.

It is not a de Polignac number, because 11681182805 - 2⁸ = 11681182549 is a prime.

It is a super-4 number, since 4×11681182805⁴ (a number of 41 digits) contains 4444 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 813014 + ... + 827256.

It is an arithmetic number, because the mean of its divisors is an integer number (471120300).

Almost surely, 2^11681182805 is an apocalyptic number.

It is an amenable number.

11681182805 is a deficient number, since it is larger than the sum of its proper divisors (3394666795).

11681182805 is a wasteful number, since it uses less digits than its factorization.

11681182805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14453.

The product of its (nonzero) digits is 30720, while the sum is 41.

The spelling of 11681182805 in words is "eleven billion, six hundred eighty-one million, one hundred eighty-two thousand, eight hundred five".