12555261111 has 8 divisors (see below), whose sum is σ = 16741209600. Its totient is φ = 8369743352.

The previous prime is 12555261109. The next prime is 12555261139. The reversal of 12555261111 is 11116255521.

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 12555261111 - 2¹ = 12555261109 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12555261811) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32085 + ... + 161678.

It is an arithmetic number, because the mean of its divisors is an integer number (2092651200).

Almost surely, 2^12555261111 is an apocalyptic number.

12555261111 is a deficient number, since it is larger than the sum of its proper divisors (4185948489).

12555261111 is a wasteful number, since it uses less digits than its factorization.

12555261111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 215365.

The product of its digits is 3000, while the sum is 30.

The spelling of 12555261111 in words is "twelve billion, five hundred fifty-five million, two hundred sixty-one thousand, one hundred eleven".