181115872555 has 8 divisors (see below), whose sum is σ = 228777944400. Its totient is φ = 137266766496.

The previous prime is 181115872493. The next prime is 181115872643. The reversal of 181115872555 is 555278511181.

181115872555 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 181115872555 - 2²⁷ = 180981654827 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 181115872499 and 181115872508.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 953241340 + ... + 953241529.

It is an arithmetic number, because the mean of its divisors is an integer number (28597243050).

Almost surely, 2^181115872555 is an apocalyptic number.

181115872555 is a deficient number, since it is larger than the sum of its proper divisors (47662071845).

181115872555 is a wasteful number, since it uses less digits than its factorization.

181115872555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1906482893.

The product of its digits is 560000, while the sum is 49.

The spelling of 181115872555 in words is "one hundred eighty-one billion, one hundred fifteen million, eight hundred seventy-two thousand, five hundred fifty-five".