72818730990 has 48 divisors (see below), whose sum is σ = 189455861088. Its totient is φ = 19405286208.

The previous prime is 72818730973. The next prime is 72818730997. The reversal of 72818730990 is 9903781827.

72818730990 is a `hidden beast` number, since 72 + 8 + 187 + 309 + 90 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72818730997) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 136594 + ... + 405333.

It is an arithmetic number, because the mean of its divisors is an integer number (3946997106).

Almost surely, 2^72818730990 is an apocalyptic number.

72818730990 is an abundant number, since it is smaller than the sum of its proper divisors (116637130098).

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

72818730990 is a wasteful number, since it uses less digits than its factorization.

72818730990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 543433 (or 543430 counting only the distinct ones).

The product of its (nonzero) digits is 1524096, while the sum is 54.

The spelling of 72818730990 in words is "seventy-two billion, eight hundred eighteen million, seven hundred thirty thousand, nine hundred ninety".