51676067657 has 2 divisors, whose sum is σ = 51676067658. Its totient is φ = 51676067656.

The previous prime is 51676067609. The next prime is 51676067683. The reversal of 51676067657 is 75676067615.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 36675697081 + 15000370576 = 191509^2 + 122476^2 .

It is a cyclic number.

It is not a de Polignac number, because 51676067657 - 2⁶ = 51676067593 is a prime.

It is not a weakly prime, because it can be changed into another prime (51676067687) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25838033828 + 25838033829.

It is an arithmetic number, because the mean of its divisors is an integer number (25838033829).

Almost surely, 2^51676067657 is an apocalyptic number.

It is an amenable number.

51676067657 is a deficient number, since it is larger than the sum of its proper divisors (1).

51676067657 is an equidigital number, since it uses as much as digits as its factorization.

51676067657 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11113200, while the sum is 56.

The spelling of 51676067657 in words is "fifty-one billion, six hundred seventy-six million, sixty-seven thousand, six hundred fifty-seven".