71816749324 has 24 divisors (see below), whose sum is σ = 127118497968. Its totient is φ = 35498270400.

The previous prime is 71816749289. The next prime is 71816749331. The reversal of 71816749324 is 42394761817.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 127699 + ... + 399925.

It is an arithmetic number, because the mean of its divisors is an integer number (5296604082).

Almost surely, 2^71816749324 is an apocalyptic number.

It is an amenable number.

71816749324 is a deficient number, since it is larger than the sum of its proper divisors (55301748644).

71816749324 is a wasteful number, since it uses less digits than its factorization.

71816749324 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 272985 (or 272983 counting only the distinct ones).

The product of its digits is 2032128, while the sum is 52.

The spelling of 71816749324 in words is "seventy-one billion, eight hundred sixteen million, seven hundred forty-nine thousand, three hundred twenty-four".