12621706355755 has 48 divisors (see below), whose sum is σ = 18038185371360. Its totient is φ = 8449119479808.

The previous prime is 12621706355723. The next prime is 12621706355759. The reversal of 12621706355755 is 55755360712621.

It is not a de Polignac number, because 12621706355755 - 2⁵ = 12621706355723 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12621706355696 and 12621706355705.

It is not an unprimeable number, because it can be changed into a prime (12621706355759) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 19583497 + ... + 20217733.

It is an arithmetic number, because the mean of its divisors is an integer number (375795528570).

Almost surely, 2^{12621706355755} is an apocalyptic number.

12621706355755 is a deficient number, since it is larger than the sum of its proper divisors (5416479015605).

12621706355755 is a wasteful number, since it uses less digits than its factorization.

12621706355755 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 636188 (or 636181 counting only the distinct ones).

The product of its (nonzero) digits is 13230000, while the sum is 55.

The spelling of 12621706355755 in words is "twelve trillion, six hundred twenty-one billion, seven hundred six million, three hundred fifty-five thousand, seven hundred fifty-five".