71855443144159 has 2 divisors, whose sum is σ = 71855443144160. Its totient is φ = 71855443144158.

The previous prime is 71855443144129. The next prime is 71855443144169. The reversal of 71855443144159 is 95144134455817.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 71855443144159 - 2¹³ = 71855443135967 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 71855443144097 and 71855443144106.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71855443144129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35927721572079 + 35927721572080.

It is an arithmetic number, because the mean of its divisors is an integer number (35927721572080).

Almost surely, 2^{71855443144159} is an apocalyptic number.

71855443144159 is a deficient number, since it is larger than the sum of its proper divisors (1).

71855443144159 is an equidigital number, since it uses as much as digits as its factorization.

71855443144159 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 48384000, while the sum is 61.

The spelling of 71855443144159 in words is "seventy-one trillion, eight hundred fifty-five billion, four hundred forty-three million, one hundred forty-four thousand, one hundred fifty-nine".