71394794593 has 2 divisors, whose sum is σ = 71394794594. Its totient is φ = 71394794592.

The previous prime is 71394794563. The next prime is 71394794677. The reversal of 71394794593 is 39549749317.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 53466387984 + 17928406609 = 231228^2 + 133897^2 .

It is a cyclic number.

It is not a de Polignac number, because 71394794593 - 2¹³ = 71394786401 is a prime.

It is not a weakly prime, because it can be changed into another prime (71394794503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35697397296 + 35697397297.

It is an arithmetic number, because the mean of its divisors is an integer number (35697397297).

Almost surely, 2^71394794593 is an apocalyptic number.

It is an amenable number.

71394794593 is a deficient number, since it is larger than the sum of its proper divisors (1).

71394794593 is an equidigital number, since it uses as much as digits as its factorization.

71394794593 is an evil number, because the sum of its binary digits is even.

The product of its digits is 25719120, while the sum is 61.

The spelling of 71394794593 in words is "seventy-one billion, three hundred ninety-four million, seven hundred ninety-four thousand, five hundred ninety-three".