71608910873 has 2 divisors, whose sum is σ = 71608910874. Its totient is φ = 71608910872.

The previous prime is 71608910819. The next prime is 71608910897. The reversal of 71608910873 is 37801980617.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 44871101584 + 26737809289 = 211828^2 + 163517^2 .

It is a cyclic number.

It is not a de Polignac number, because 71608910873 - 2⁸ = 71608910617 is a prime.

It is a super-2 number, since 2×71608910873² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (71608910803) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35804455436 + 35804455437.

It is an arithmetic number, because the mean of its divisors is an integer number (35804455437).

Almost surely, 2^71608910873 is an apocalyptic number.

It is an amenable number.

71608910873 is a deficient number, since it is larger than the sum of its proper divisors (1).

71608910873 is an equidigital number, since it uses as much as digits as its factorization.

71608910873 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 508032, while the sum is 50.

The spelling of 71608910873 in words is "seventy-one billion, six hundred eight million, nine hundred ten thousand, eight hundred seventy-three".