76791821567 has 2 divisors, whose sum is σ = 76791821568. Its totient is φ = 76791821566.

The previous prime is 76791821551. The next prime is 76791821593. The reversal of 76791821567 is 76512819767.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 76791821567 - 2⁴ = 76791821551 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (76791871567) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38395910783 + 38395910784.

It is an arithmetic number, because the mean of its divisors is an integer number (38395910784).

Almost surely, 2^76791821567 is an apocalyptic number.

76791821567 is a deficient number, since it is larger than the sum of its proper divisors (1).

76791821567 is an equidigital number, since it uses as much as digits as its factorization.

76791821567 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8890560, while the sum is 59.

The spelling of 76791821567 in words is "seventy-six billion, seven hundred ninety-one million, eight hundred twenty-one thousand, five hundred sixty-seven".