47689705729 has 2 divisors, whose sum is σ = 47689705730. Its totient is φ = 47689705728.

The previous prime is 47689705717. The next prime is 47689705759. The reversal of 47689705729 is 92750798674.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 33579829504 + 14109876225 = 183248^2 + 118785^2 .

It is a cyclic number.

It is not a de Polignac number, because 47689705729 - 2³¹ = 45542222081 is a prime.

It is not a weakly prime, because it can be changed into another prime (47689705759) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23844852864 + 23844852865.

It is an arithmetic number, because the mean of its divisors is an integer number (23844852865).

Almost surely, 2^47689705729 is an apocalyptic number.

It is an amenable number.

47689705729 is a deficient number, since it is larger than the sum of its proper divisors (1).

47689705729 is an equidigital number, since it uses as much as digits as its factorization.

47689705729 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 53343360, while the sum is 64.

The spelling of 47689705729 in words is "forty-seven billion, six hundred eighty-nine million, seven hundred five thousand, seven hundred twenty-nine".