71310516544 has 28 divisors (see below), whose sum is σ = 141515799264. Its totient is φ = 35652992384.

The previous prime is 71310516491. The next prime is 71310516553. The reversal of 71310516544 is 44561501317.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1486989 + ... + 1534195.

It is an arithmetic number, because the mean of its divisors is an integer number (5054135688).

Almost surely, 2^71310516544 is an apocalyptic number.

It is an amenable number.

71310516544 is a deficient number, since it is larger than the sum of its proper divisors (70205282720).

71310516544 is a wasteful number, since it uses less digits than its factorization.

71310516544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70822 (or 70812 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 37.

The spelling of 71310516544 in words is "seventy-one billion, three hundred ten million, five hundred sixteen thousand, five hundred forty-four".