12775156185 has 32 divisors (see below), whose sum is σ = 22312547712. Its totient is φ = 6190100480.

The previous prime is 12775156159. The next prime is 12775156201. The reversal of 12775156185 is 58165157721.

It is a happy number.

It is not a de Polignac number, because 12775156185 - 2¹⁰ = 12775155161 is a prime.

It is a super-2 number, since 2×12775156185² (a number of 21 digits) contains 22 as substring.

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, 246457 + ... + 293753.

It is an arithmetic number, because the mean of its divisors is an integer number (697267116).

Almost surely, 2^12775156185 is an apocalyptic number.

12775156185 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12775156185 is a deficient number, since it is larger than the sum of its proper divisors (9537391527).

12775156185 is a wasteful number, since it uses less digits than its factorization.

12775156185 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48953.

The product of its digits is 588000, while the sum is 48.

The spelling of 12775156185 in words is "twelve billion, seven hundred seventy-five million, one hundred fifty-six thousand, one hundred eighty-five".