11540171864223 has 20 divisors (see below), whose sum is σ = 17432719056720. Its totient is φ = 7607004669792.

The previous prime is 11540171864209. The next prime is 11540171864257. The reversal of 11540171864223 is 32246817104511.

11540171864223 is a `hidden beast` number, since 1 + 1 + 5 + 40 + 1 + 7 + 186 + 422 + 3 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-11540171864223 is a prime.

It is a super-2 number, since 2×11540171864223² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11540171864293) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 800393115 + ... + 800407532.

It is an arithmetic number, because the mean of its divisors is an integer number (871635952836).

Almost surely, 2^{11540171864223} is an apocalyptic number.

11540171864223 is a deficient number, since it is larger than the sum of its proper divisors (5892547192497).

11540171864223 is an equidigital number, since it uses as much as digits as its factorization.

11540171864223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1600800748 (or 1600800739 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 45.

Adding to 11540171864223 its reverse (32246817104511), we get a palindrome (43786988968734).

The spelling of 11540171864223 in words is "eleven trillion, five hundred forty billion, one hundred seventy-one million, eight hundred sixty-four thousand, two hundred twenty-three".