55339351387729 has 2 divisors, whose sum is σ = 55339351387730. Its totient is φ = 55339351387728.

The previous prime is 55339351387603. The next prime is 55339351387763. The reversal of 55339351387729 is 92778315393355.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 48486474547729 + 6852876840000 = 6963223^2 + 2617800^2 .

It is a cyclic number.

It is not a de Polignac number, because 55339351387729 - 2²⁵ = 55339317833297 is a prime.

It is not a weakly prime, because it can be changed into another prime (55339381387729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27669675693864 + 27669675693865.

It is an arithmetic number, because the mean of its divisors is an integer number (27669675693865).

Almost surely, 2^{55339351387729} is an apocalyptic number.

It is an amenable number.

55339351387729 is a deficient number, since it is larger than the sum of its proper divisors (1).

55339351387729 is an equidigital number, since it uses as much as digits as its factorization.

55339351387729 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 642978000, while the sum is 70.

The spelling of 55339351387729 in words is "fifty-five trillion, three hundred thirty-nine billion, three hundred fifty-one million, three hundred eighty-seven thousand, seven hundred twenty-nine".