73780327393 has 2 divisors, whose sum is σ = 73780327394. Its totient is φ = 73780327392.

The previous prime is 73780327303. The next prime is 73780327459. The reversal of 73780327393 is 39372308737.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 69792657489 + 3987669904 = 264183^2 + 63148^2 .

It is a cyclic number.

It is not a de Polignac number, because 73780327393 - 2¹³ = 73780319201 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 73780327393.

It is not a weakly prime, because it can be changed into another prime (73780327303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36890163696 + 36890163697.

It is an arithmetic number, because the mean of its divisors is an integer number (36890163697).

Almost surely, 2^73780327393 is an apocalyptic number.

It is an amenable number.

73780327393 is a deficient number, since it is larger than the sum of its proper divisors (1).

73780327393 is an equidigital number, since it uses as much as digits as its factorization.

73780327393 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4000752, while the sum is 52.

The spelling of 73780327393 in words is "seventy-three billion, seven hundred eighty million, three hundred twenty-seven thousand, three hundred ninety-three".