12555055511 has 2 divisors, whose sum is σ = 12555055512. Its totient is φ = 12555055510.

The previous prime is 12555055483. The next prime is 12555055531. The reversal of 12555055511 is 11555055521.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12555055511 - 2¹⁸ = 12554793367 is a prime.

It is a super-2 number, since 2×12555055511² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12555055531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6277527755 + 6277527756.

It is an arithmetic number, because the mean of its divisors is an integer number (6277527756).

Almost surely, 2^12555055511 is an apocalyptic number.

12555055511 is a deficient number, since it is larger than the sum of its proper divisors (1).

12555055511 is an equidigital number, since it uses as much as digits as its factorization.

12555055511 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31250, while the sum is 35.

The spelling of 12555055511 in words is "twelve billion, five hundred fifty-five million, fifty-five thousand, five hundred eleven".