71116633249 has 2 divisors, whose sum is σ = 71116633250. Its totient is φ = 71116633248.

The previous prime is 71116633163. The next prime is 71116633261. The reversal of 71116633249 is 94233661117.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 71110222225 + 6411024 = 266665^2 + 2532^2 .

It is a cyclic number.

It is not a de Polignac number, because 71116633249 - 2¹⁵ = 71116600481 is a prime.

It is not a weakly prime, because it can be changed into another prime (71116633649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35558316624 + 35558316625.

It is an arithmetic number, because the mean of its divisors is an integer number (35558316625).

Almost surely, 2^71116633249 is an apocalyptic number.

It is an amenable number.

71116633249 is a deficient number, since it is larger than the sum of its proper divisors (1).

71116633249 is an equidigital number, since it uses as much as digits as its factorization.

71116633249 is an evil number, because the sum of its binary digits is even.

The product of its digits is 163296, while the sum is 43.

The spelling of 71116633249 in words is "seventy-one billion, one hundred sixteen million, six hundred thirty-three thousand, two hundred forty-nine".