12755733755721 has 32 divisors (see below), whose sum is σ = 18739436455296. Its totient is φ = 7653412800000.

The previous prime is 12755733755717. The next prime is 12755733755813.

12755733755721 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 12755733755721 - 2² = 12755733755717 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12755733755711) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 32806765 + ... + 33193301.

It is an arithmetic number, because the mean of its divisors is an integer number (585607389228).

Almost surely, 2^{12755733755721} is an apocalyptic number.

12755733755721 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12755733755721 is a deficient number, since it is larger than the sum of its proper divisors (5983702699575).

12755733755721 is a wasteful number, since it uses less digits than its factorization.

12755733755721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 396553.

The product of its digits is 54022500, while the sum is 60.

The spelling of 12755733755721 in words is "twelve trillion, seven hundred fifty-five billion, seven hundred thirty-three million, seven hundred fifty-five thousand, seven hundred twenty-one".