11181665054 has 24 divisors (see below), whose sum is σ = 19730103120. Its totient is φ = 4738294176.

The previous prime is 11181665039. The next prime is 11181665057. The reversal of 11181665054 is 45056618111.

It is a junction number, because it is equal to n+sod(n) for n = 11181664999 and 11181665017.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11181665057) 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 11 ways as a sum of consecutive naturals, for example, 632282 + ... + 649725.

It is an arithmetic number, because the mean of its divisors is an integer number (822087630).

Almost surely, 2^11181665054 is an apocalyptic number.

11181665054 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

11181665054 is a deficient number, since it is larger than the sum of its proper divisors (8548438066).

11181665054 is a wasteful number, since it uses less digits than its factorization.

11181665054 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1282112 (or 1282105 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 38.

The spelling of 11181665054 in words is "eleven billion, one hundred eighty-one million, six hundred sixty-five thousand, fifty-four".