71281774263 has 72 divisors (see below), whose sum is σ = 114708945024. Its totient is φ = 39257174880.

The previous prime is 71281774259. The next prime is 71281774273. The reversal of 71281774263 is 36247718217.

It is not a de Polignac number, because 71281774263 - 2² = 71281774259 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71281774273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 39977670 + ... + 39979452.

It is an arithmetic number, because the mean of its divisors is an integer number (1593179792).

Almost surely, 2^71281774263 is an apocalyptic number.

71281774263 is a deficient number, since it is larger than the sum of its proper divisors (43427170761).

71281774263 is a wasteful number, since it uses less digits than its factorization.

71281774263 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2145 (or 2107 counting only the distinct ones).

The product of its digits is 790272, while the sum is 48.

The spelling of 71281774263 in words is "seventy-one billion, two hundred eighty-one million, seven hundred seventy-four thousand, two hundred sixty-three".