12621013263255 has 32 divisors (see below), whose sum is σ = 20845295751168. Its totient is φ = 6513987801600.

The previous prime is 12621013263241. The next prime is 12621013263311. The reversal of 12621013263255 is 55236231012621.

It is not a de Polignac number, because 12621013263255 - 2⁵ = 12621013263223 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 54680902 + ... + 54911228.

It is an arithmetic number, because the mean of its divisors is an integer number (651415492224).

Almost surely, 2^{12621013263255} is an apocalyptic number.

12621013263255 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12621013263255 is a deficient number, since it is larger than the sum of its proper divisors (8224282487913).

12621013263255 is a wasteful number, since it uses less digits than its factorization.

12621013263255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 348207.

The product of its (nonzero) digits is 129600, while the sum is 39.

Adding to 12621013263255 its reverse (55236231012621), we get a palindrome (67857244275876).

The spelling of 12621013263255 in words is "twelve trillion, six hundred twenty-one billion, thirteen million, two hundred sixty-three thousand, two hundred fifty-five".