71443312147 has 2 divisors, whose sum is σ = 71443312148. Its totient is φ = 71443312146.

The previous prime is 71443312079. The next prime is 71443312159. The reversal of 71443312147 is 74121334417.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 71443312147 - 2¹⁵ = 71443279379 is a prime.

It is not a weakly prime, because it can be changed into another prime (71443318147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35721656073 + 35721656074.

It is an arithmetic number, because the mean of its divisors is an integer number (35721656074).

Almost surely, 2^71443312147 is an apocalyptic number.

71443312147 is a deficient number, since it is larger than the sum of its proper divisors (1).

71443312147 is an equidigital number, since it uses as much as digits as its factorization.

71443312147 is an evil number, because the sum of its binary digits is even.

The product of its digits is 56448, while the sum is 37.

The spelling of 71443312147 in words is "seventy-one billion, four hundred forty-three million, three hundred twelve thousand, one hundred forty-seven".