12555261165 has 8 divisors (see below), whose sum is σ = 20088417888. Its totient is φ = 6696139280.

The previous prime is 12555261157. The next prime is 12555261227. The reversal of 12555261165 is 56116255521.

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

It is not a de Polignac number, because 12555261165 - 2³ = 12555261157 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 418508691 + ... + 418508720.

It is an arithmetic number, because the mean of its divisors is an integer number (2511052236).

Almost surely, 2^12555261165 is an apocalyptic number.

12555261165 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12555261165 is a deficient number, since it is larger than the sum of its proper divisors (7533156723).

12555261165 is an equidigital number, since it uses as much as digits as its factorization.

12555261165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 837017419.

The product of its digits is 90000, while the sum is 39.

The spelling of 12555261165 in words is "twelve billion, five hundred fifty-five million, two hundred sixty-one thousand, one hundred sixty-five".