47865856057 has 2 divisors, whose sum is σ = 47865856058. Its totient is φ = 47865856056.

The previous prime is 47865856037. The next prime is 47865856091. The reversal of 47865856057 is 75065856874.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 47411143081 + 454712976 = 217741^2 + 21324^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-47865856057 is a prime.

It is a super-2 number, since 2×47865856057² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 47865855986 and 47865856004.

It is not a weakly prime, because it can be changed into another prime (47865856037) 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, 23932928028 + 23932928029.

It is an arithmetic number, because the mean of its divisors is an integer number (23932928029).

Almost surely, 2^47865856057 is an apocalyptic number.

It is an amenable number.

47865856057 is a deficient number, since it is larger than the sum of its proper divisors (1).

47865856057 is an equidigital number, since it uses as much as digits as its factorization.

47865856057 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 56448000, while the sum is 61.

The spelling of 47865856057 in words is "forty-seven billion, eight hundred sixty-five million, eight hundred fifty-six thousand, fifty-seven".