47707873657 has 2 divisors, whose sum is σ = 47707873658. Its totient is φ = 47707873656.

The previous prime is 47707873649. The next prime is 47707873673. The reversal of 47707873657 is 75637870774.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 33230008681 + 14477864976 = 182291^2 + 120324^2 .

It is a cyclic number.

It is not a de Polignac number, because 47707873657 - 2³ = 47707873649 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 47707873595 and 47707873604.

It is not a weakly prime, because it can be changed into another prime (47707873607) 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, 23853936828 + 23853936829.

It is an arithmetic number, because the mean of its divisors is an integer number (23853936829).

Almost surely, 2^47707873657 is an apocalyptic number.

It is an amenable number.

47707873657 is a deficient number, since it is larger than the sum of its proper divisors (1).

47707873657 is an equidigital number, since it uses as much as digits as its factorization.

47707873657 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48404160, while the sum is 61.

The spelling of 47707873657 in words is "forty-seven billion, seven hundred seven million, eight hundred seventy-three thousand, six hundred fifty-seven".