71723616040 has 32 divisors (see below), whose sum is σ = 169871724000. Its totient is φ = 27179475264.

The previous prime is 71723616007. The next prime is 71723616043. The reversal of 71723616040 is 4061632717.

It is not an unprimeable number, because it can be changed into a prime (71723616043) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47185830 + ... + 47187349.

It is an arithmetic number, because the mean of its divisors is an integer number (5308491375).

Almost surely, 2^71723616040 is an apocalyptic number.

It is an amenable number.

71723616040 is an abundant number, since it is smaller than the sum of its proper divisors (98148107960).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

71723616040 is a wasteful number, since it uses less digits than its factorization.

71723616040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94373209 (or 94373205 counting only the distinct ones).

The product of its (nonzero) digits is 42336, while the sum is 37.

The spelling of 71723616040 in words is "seventy-one billion, seven hundred twenty-three million, six hundred sixteen thousand, forty".