12275201655 has 48 divisors (see below), whose sum is σ = 22731246720. Its totient is φ = 6109608384.

The previous prime is 12275201651. The next prime is 12275201663. The reversal of 12275201655 is 55610257221.

12275201655 is a `hidden beast` number, since 122 + 7 + 520 + 1 + 6 + 5 + 5 = 666.

It is not a de Polignac number, because 12275201655 - 2² = 12275201651 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12275201651) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 49857 + ... + 164426.

It is an arithmetic number, because the mean of its divisors is an integer number (473567640).

Almost surely, 2^12275201655 is an apocalyptic number.

12275201655 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12275201655 is a deficient number, since it is larger than the sum of its proper divisors (10456045065).

12275201655 is a wasteful number, since it uses less digits than its factorization.

12275201655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214380 (or 214377 counting only the distinct ones).

The product of its (nonzero) digits is 42000, while the sum is 36.

Adding to 12275201655 its reverse (55610257221), we get a palindrome (67885458876).

The spelling of 12275201655 in words is "twelve billion, two hundred seventy-five million, two hundred one thousand, six hundred fifty-five".