76056664561 has 2 divisors, whose sum is σ = 76056664562. Its totient is φ = 76056664560.

The previous prime is 76056664547. The next prime is 76056664601. The reversal of 76056664561 is 16546665067.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 51130254400 + 24926410161 = 226120^2 + 157881^2 .

It is a cyclic number.

It is not a de Polignac number, because 76056664561 - 2²⁵ = 76023110129 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 76056664499 and 76056664508.

It is not a weakly prime, because it can be changed into another prime (76056664261) 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, 38028332280 + 38028332281.

It is an arithmetic number, because the mean of its divisors is an integer number (38028332281).

Almost surely, 2^76056664561 is an apocalyptic number.

It is an amenable number.

76056664561 is a deficient number, since it is larger than the sum of its proper divisors (1).

76056664561 is an equidigital number, since it uses as much as digits as its factorization.

76056664561 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5443200, while the sum is 52.

The spelling of 76056664561 in words is "seventy-six billion, fifty-six million, six hundred sixty-four thousand, five hundred sixty-one".