12155274255 has 32 divisors (see below), whose sum is σ = 20428508160. Its totient is φ = 6159859200.

The previous prime is 12155274239. The next prime is 12155274283. The reversal of 12155274255 is 55247255121.

It is not a de Polignac number, because 12155274255 - 2⁴ = 12155274239 is a prime.

It is a congruent number.

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, 64570 + ... + 168759.

It is an arithmetic number, because the mean of its divisors is an integer number (638390880).

Almost surely, 2^12155274255 is an apocalyptic number.

12155274255 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12155274255 is a deficient number, since it is larger than the sum of its proper divisors (8273233905).

12155274255 is a wasteful number, since it uses less digits than its factorization.

12155274255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 233511.

The product of its digits is 140000, while the sum is 39.

The spelling of 12155274255 in words is "twelve billion, one hundred fifty-five million, two hundred seventy-four thousand, two hundred fifty-five".