52478738677 has 2 divisors, whose sum is σ = 52478738678. Its totient is φ = 52478738676.

The previous prime is 52478738671. The next prime is 52478738699. The reversal of 52478738677 is 77683787425.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 52257502801 + 221235876 = 228599^2 + 14874^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-52478738677 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (52478738671) 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, 26239369338 + 26239369339.

It is an arithmetic number, because the mean of its divisors is an integer number (26239369339).

Almost surely, 2^52478738677 is an apocalyptic number.

It is an amenable number.

52478738677 is a deficient number, since it is larger than the sum of its proper divisors (1).

52478738677 is an equidigital number, since it uses as much as digits as its factorization.

52478738677 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 110638080, while the sum is 64.

The spelling of 52478738677 in words is "fifty-two billion, four hundred seventy-eight million, seven hundred thirty-eight thousand, six hundred seventy-seven".