55109071447 has 2 divisors, whose sum is σ = 55109071448. Its totient is φ = 55109071446.

The previous prime is 55109071333. The next prime is 55109071499. The reversal of 55109071447 is 74417090155.

It is a happy number.

55109071447 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 55109071447 - 2¹⁵ = 55109038679 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55109075447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27554535723 + 27554535724.

It is an arithmetic number, because the mean of its divisors is an integer number (27554535724).

Almost surely, 2^55109071447 is an apocalyptic number.

55109071447 is a deficient number, since it is larger than the sum of its proper divisors (1).

55109071447 is an equidigital number, since it uses as much as digits as its factorization.

55109071447 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 176400, while the sum is 43.

The spelling of 55109071447 in words is "fifty-five billion, one hundred nine million, seventy-one thousand, four hundred forty-seven".