71715906433 has 2 divisors, whose sum is σ = 71715906434. Its totient is φ = 71715906432.

The previous prime is 71715906371. The next prime is 71715906463. The reversal of 71715906433 is 33460951717.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 66107094769 + 5608811664 = 257113^2 + 74892^2 .

It is a cyclic number.

It is not a de Polignac number, because 71715906433 - 2³³ = 63125971841 is a prime.

It is not a weakly prime, because it can be changed into another prime (71715906463) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35857953216 + 35857953217.

It is an arithmetic number, because the mean of its divisors is an integer number (35857953217).

Almost surely, 2^71715906433 is an apocalyptic number.

It is an amenable number.

71715906433 is a deficient number, since it is larger than the sum of its proper divisors (1).

71715906433 is an equidigital number, since it uses as much as digits as its factorization.

71715906433 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 476280, while the sum is 46.

The spelling of 71715906433 in words is "seventy-one billion, seven hundred fifteen million, nine hundred six thousand, four hundred thirty-three".