72788755693 has 2 divisors, whose sum is σ = 72788755694. Its totient is φ = 72788755692.

The previous prime is 72788755691. The next prime is 72788755727. The reversal of 72788755693 is 39655788727.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 58802855049 + 13985900644 = 242493^2 + 118262^2 .

It is a cyclic number.

It is not a de Polignac number, because 72788755693 - 2¹ = 72788755691 is a prime.

Together with 72788755691, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72788755691) by changing a digit.

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, 36394377846 + 36394377847.

It is an arithmetic number, because the mean of its divisors is an integer number (36394377847).

Almost surely, 2^72788755693 is an apocalyptic number.

It is an amenable number.

72788755693 is a deficient number, since it is larger than the sum of its proper divisors (1).

72788755693 is an equidigital number, since it uses as much as digits as its factorization.

72788755693 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 177811200, while the sum is 67.

The spelling of 72788755693 in words is "seventy-two billion, seven hundred eighty-eight million, seven hundred fifty-five thousand, six hundred ninety-three".