55556671729903 has 2 divisors, whose sum is σ = 55556671729904. Its totient is φ = 55556671729902.

The previous prime is 55556671729877. The next prime is 55556671729921. The reversal of 55556671729903 is 30992717665555.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55556671729903 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55556671729943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27778335864951 + 27778335864952.

It is an arithmetic number, because the mean of its divisors is an integer number (27778335864952).

Almost surely, 2^{55556671729903} is an apocalyptic number.

55556671729903 is a deficient number, since it is larger than the sum of its proper divisors (1).

55556671729903 is an equidigital number, since it uses as much as digits as its factorization.

55556671729903 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 535815000, while the sum is 70.

The spelling of 55556671729903 in words is "fifty-five trillion, five hundred fifty-six billion, six hundred seventy-one million, seven hundred twenty-nine thousand, nine hundred three".