47247746081 has 2 divisors, whose sum is σ = 47247746082. Its totient is φ = 47247746080.

The previous prime is 47247746069. The next prime is 47247746137. The reversal of 47247746081 is 18064774274.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 34156953856 + 13090792225 = 184816^2 + 114415^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-47247746081 is a prime.

It is a super-2 number, since 2×47247746081² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (47247746011) 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, 23623873040 + 23623873041.

It is an arithmetic number, because the mean of its divisors is an integer number (23623873041).

Almost surely, 2^47247746081 is an apocalyptic number.

It is an amenable number.

47247746081 is a deficient number, since it is larger than the sum of its proper divisors (1).

47247746081 is an equidigital number, since it uses as much as digits as its factorization.

47247746081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2107392, while the sum is 50.

The spelling of 47247746081 in words is "forty-seven billion, two hundred forty-seven million, seven hundred forty-six thousand, eighty-one".