71715906371 has 2 divisors, whose sum is σ = 71715906372. Its totient is φ = 71715906370.

The previous prime is 71715906349. The next prime is 71715906433. The reversal of 71715906371 is 17360951717.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (17360951717) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 71715906371 - 2¹⁸ = 71715644227 is a prime.

It is a super-2 number, since 2×71715906371² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (71715908371) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35857953185 + 35857953186.

It is an arithmetic number, because the mean of its divisors is an integer number (35857953186).

Almost surely, 2^71715906371 is an apocalyptic number.

71715906371 is a deficient number, since it is larger than the sum of its proper divisors (1).

71715906371 is an equidigital number, since it uses as much as digits as its factorization.

71715906371 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 277830, while the sum is 47.

The spelling of 71715906371 in words is "seventy-one billion, seven hundred fifteen million, nine hundred six thousand, three hundred seventy-one".