55128205674791 has 2 divisors, whose sum is σ = 55128205674792. Its totient is φ = 55128205674790.

The previous prime is 55128205674733. The next prime is 55128205674811. The reversal of 55128205674791 is 19747650282155.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 55128205674791 - 2⁴² = 50730159163687 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55128205674701) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27564102837395 + 27564102837396.

It is an arithmetic number, because the mean of its divisors is an integer number (27564102837396).

Almost surely, 2^{55128205674791} is an apocalyptic number.

55128205674791 is a deficient number, since it is larger than the sum of its proper divisors (1).

55128205674791 is an equidigital number, since it uses as much as digits as its factorization.

55128205674791 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 42336000, while the sum is 62.

The spelling of 55128205674791 in words is "fifty-five trillion, one hundred twenty-eight billion, two hundred five million, six hundred seventy-four thousand, seven hundred ninety-one".