72316666500 has 384 divisors, whose sum is σ = 235240492032. Its totient is φ = 17147289600.

The previous prime is 72316666427. The next prime is 72316666507. The reversal of 72316666500 is 566661327.

It is not an unprimeable number, because it can be changed into a prime (72316666507) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 81529057 + ... + 81529943.

It is an arithmetic number, because the mean of its divisors is an integer number (612605448).

Almost surely, 2^72316666500 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 72316666500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (117620246016).

72316666500 is an abundant number, since it is smaller than the sum of its proper divisors (162923825532).

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

72316666500 is a wasteful number, since it uses less digits than its factorization.

72316666500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1072 (or 1060 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 42.

The spelling of 72316666500 in words is "seventy-two billion, three hundred sixteen million, six hundred sixty-six thousand, five hundred".