71854730329 has 2 divisors, whose sum is σ = 71854730330. Its totient is φ = 71854730328.

The previous prime is 71854730293. The next prime is 71854730357. The reversal of 71854730329 is 92303745817.

Together with previous prime (71854730293) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 53582990400 + 18271739929 = 231480^2 + 135173^2 .

It is an emirp because it is prime and its reverse (92303745817) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 71854730329 - 2⁷ = 71854730201 is a prime.

It is not a weakly prime, because it can be changed into another prime (71854733329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35927365164 + 35927365165.

It is an arithmetic number, because the mean of its divisors is an integer number (35927365165).

Almost surely, 2^71854730329 is an apocalyptic number.

It is an amenable number.

71854730329 is a deficient number, since it is larger than the sum of its proper divisors (1).

71854730329 is an equidigital number, since it uses as much as digits as its factorization.

71854730329 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1270080, while the sum is 49.

The spelling of 71854730329 in words is "seventy-one billion, eight hundred fifty-four million, seven hundred thirty thousand, three hundred twenty-nine".