72820604787500 has 144 divisors (see below), whose sum is σ = 174470266625760. Its totient is φ = 26469475200000.

The previous prime is 72820604787493. The next prime is 72820604787547. The reversal of 72820604787500 is 578740602827.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 254135 + ... + 12070865.

It is an arithmetic number, because the mean of its divisors is an integer number (1211599073790).

Almost surely, 2^{72820604787500} 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 72820604787500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (87235133312880).

72820604787500 is an abundant number, since it is smaller than the sum of its proper divisors (101649661838260).

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

72820604787500 is a wasteful number, since it uses less digits than its factorization.

72820604787500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11816806 (or 11816784 counting only the distinct ones).

The product of its (nonzero) digits is 10536960, while the sum is 56.

The spelling of 72820604787500 in words is "seventy-two trillion, eight hundred twenty billion, six hundred four million, seven hundred eighty-seven thousand, five hundred".