76857463148549 has 2 divisors, whose sum is σ = 76857463148550. Its totient is φ = 76857463148548.

The previous prime is 76857463148533. The next prime is 76857463148591. The reversal of 76857463148549 is 94584136475867.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 71341926352225 + 5515536796324 = 8446415^2 + 2348518^2 .

It is a cyclic number.

It is not a de Polignac number, because 76857463148549 - 2⁴ = 76857463148533 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 76857463148549.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (76857463148509) 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, 38428731574274 + 38428731574275.

It is an arithmetic number, because the mean of its divisors is an integer number (38428731574275).

Almost surely, 2^{76857463148549} is an apocalyptic number.

It is an amenable number.

76857463148549 is a deficient number, since it is larger than the sum of its proper divisors (1).

76857463148549 is an equidigital number, since it uses as much as digits as its factorization.

76857463148549 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4877107200, while the sum is 77.

The spelling of 76857463148549 in words is "seventy-six trillion, eight hundred fifty-seven billion, four hundred sixty-three million, one hundred forty-eight thousand, five hundred forty-nine".