51601336679 has 2 divisors, whose sum is σ = 51601336680. Its totient is φ = 51601336678.

The previous prime is 51601336669. The next prime is 51601336691. The reversal of 51601336679 is 97663310615.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51601336679 - 2²⁴ = 51584559463 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51601336669) 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, 25800668339 + 25800668340.

It is an arithmetic number, because the mean of its divisors is an integer number (25800668340).

Almost surely, 2^51601336679 is an apocalyptic number.

51601336679 is a deficient number, since it is larger than the sum of its proper divisors (1).

51601336679 is an equidigital number, since it uses as much as digits as its factorization.

51601336679 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 612360, while the sum is 47.

The spelling of 51601336679 in words is "fifty-one billion, six hundred one million, three hundred thirty-six thousand, six hundred seventy-nine".