76320257393 has 2 divisors, whose sum is σ = 76320257394. Its totient is φ = 76320257392.

The previous prime is 76320257371. The next prime is 76320257417. The reversal of 76320257393 is 39375202367.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 46428613729 + 29891643664 = 215473^2 + 172892^2 .

It is a cyclic number.

It is not a de Polignac number, because 76320257393 - 2⁸ = 76320257137 is a prime.

It is a super-3 number, since 3×76320257393³ (a number of 34 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (76320257303) 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, 38160128696 + 38160128697.

It is an arithmetic number, because the mean of its divisors is an integer number (38160128697).

Almost surely, 2^76320257393 is an apocalyptic number.

It is an amenable number.

76320257393 is a deficient number, since it is larger than the sum of its proper divisors (1).

76320257393 is an equidigital number, since it uses as much as digits as its factorization.

76320257393 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1428840, while the sum is 47.

The spelling of 76320257393 in words is "seventy-six billion, three hundred twenty million, two hundred fifty-seven thousand, three hundred ninety-three".