72830668440 has 64 divisors (see below), whose sum is σ = 226026223200. Its totient is φ = 18751803392.

The previous prime is 72830668403. The next prime is 72830668441. The reversal of 72830668440 is 4486603827.

It is a self number, because there is not a number n which added to its sum of digits gives 72830668440.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72830668441) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10460697 + ... + 10467656.

Almost surely, 2^72830668440 is an apocalyptic number.

It is an amenable number.

72830668440 is an abundant number, since it is smaller than the sum of its proper divisors (153195554760).

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

72830668440 is a wasteful number, since it uses less digits than its factorization.

72830668440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20928396 (or 20928392 counting only the distinct ones).

The product of its (nonzero) digits is 1548288, while the sum is 48.

The spelling of 72830668440 in words is "seventy-two billion, eight hundred thirty million, six hundred sixty-eight thousand, four hundred forty".