55172193536479 has 2 divisors, whose sum is σ = 55172193536480. Its totient is φ = 55172193536478.

The previous prime is 55172193536353. The next prime is 55172193536573. The reversal of 55172193536479 is 97463539127155.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 55172193536479 - 2¹⁹ = 55172193012191 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55172193536279) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27586096768239 + 27586096768240.

It is an arithmetic number, because the mean of its divisors is an integer number (27586096768240).

Almost surely, 2^{55172193536479} is an apocalyptic number.

55172193536479 is a deficient number, since it is larger than the sum of its proper divisors (1).

55172193536479 is an equidigital number, since it uses as much as digits as its factorization.

55172193536479 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 214326000, while the sum is 67.

The spelling of 55172193536479 in words is "fifty-five trillion, one hundred seventy-two billion, one hundred ninety-three million, five hundred thirty-six thousand, four hundred seventy-nine".