55556671729927 has 2 divisors, whose sum is σ = 55556671729928. Its totient is φ = 55556671729926.

The previous prime is 55556671729921. The next prime is 55556671729943. The reversal of 55556671729927 is 72992717665555.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 55556671729927 - 2¹⁵ = 55556671697159 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55556671729921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27778335864963 + 27778335864964.

It is an arithmetic number, because the mean of its divisors is an integer number (27778335864964).

Almost surely, 2^{55556671729927} is an apocalyptic number.

55556671729927 is a deficient number, since it is larger than the sum of its proper divisors (1).

55556671729927 is an equidigital number, since it uses as much as digits as its factorization.

55556671729927 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2500470000, while the sum is 76.

The spelling of 55556671729927 in words is "fifty-five trillion, five hundred fifty-six billion, six hundred seventy-one million, seven hundred twenty-nine thousand, nine hundred twenty-seven".