72782920068 has 36 divisors (see below), whose sum is σ = 170804909520. Its totient is φ = 24121292640.

The previous prime is 72782920051. The next prime is 72782920069. The reversal of 72782920068 is 86002928727.

It is a self number, because there is not a number n which added to its sum of digits gives 72782920068.

It is not an unprimeable number, because it can be changed into a prime (72782920069) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12500598 + ... + 12506418.

It is an arithmetic number, because the mean of its divisors is an integer number (4744580820).

Almost surely, 2^72782920068 is an apocalyptic number.

It is an amenable number.

72782920068 is an abundant number, since it is smaller than the sum of its proper divisors (98021989452).

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

72782920068 is an equidigital number, since it uses as much as digits as its factorization.

72782920068 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11828 (or 6005 counting only the distinct ones).

The product of its (nonzero) digits is 1354752, while the sum is 51.

The spelling of 72782920068 in words is "seventy-two billion, seven hundred eighty-two million, nine hundred twenty thousand, sixty-eight".