76848178681 has 2 divisors, whose sum is σ = 76848178682. Its totient is φ = 76848178680.

The previous prime is 76848178607. The next prime is 76848178709. The reversal of 76848178681 is 18687184867.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 41428938681 + 35419240000 = 203541^2 + 188200^2 .

It is a cyclic number.

It is not a de Polignac number, because 76848178681 - 2⁷ = 76848178553 is a prime.

It is a super-2 number, since 2×76848178681² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (76848170681) 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, 38424089340 + 38424089341.

It is an arithmetic number, because the mean of its divisors is an integer number (38424089341).

Almost surely, 2^76848178681 is an apocalyptic number.

It is an amenable number.

76848178681 is a deficient number, since it is larger than the sum of its proper divisors (1).

76848178681 is an equidigital number, since it uses as much as digits as its factorization.

76848178681 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 28901376, while the sum is 64.

The spelling of 76848178681 in words is "seventy-six billion, eight hundred forty-eight million, one hundred seventy-eight thousand, six hundred eighty-one".