72790388068 has 6 divisors (see below), whose sum is σ = 127383179126. Its totient is φ = 36395194032.

The previous prime is 72790388059. The next prime is 72790388071. The reversal of 72790388068 is 86088309727.

It can be written as a sum of positive squares in only one way, i.e., 41501023524 + 31289364544 = 203718^2 + 176888^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9098798505 + ... + 9098798512.

Almost surely, 2^72790388068 is an apocalyptic number.

It is an amenable number.

72790388068 is a deficient number, since it is larger than the sum of its proper divisors (54592791058).

72790388068 is a wasteful number, since it uses less digits than its factorization.

72790388068 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18197597021 (or 18197597019 counting only the distinct ones).

The product of its (nonzero) digits is 8128512, while the sum is 58.

The spelling of 72790388068 in words is "seventy-two billion, seven hundred ninety million, three hundred eighty-eight thousand, sixty-eight".