47257561009 has 2 divisors, whose sum is σ = 47257561010. Its totient is φ = 47257561008.

The previous prime is 47257561003. The next prime is 47257561051. The reversal of 47257561009 is 90016575274.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 43808583025 + 3448977984 = 209305^2 + 58728^2 .

It is a cyclic number.

It is not a de Polignac number, because 47257561009 - 2¹⁷ = 47257429937 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 47257561009.

It is not a weakly prime, because it can be changed into another prime (47257561003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23628780504 + 23628780505.

It is an arithmetic number, because the mean of its divisors is an integer number (23628780505).

Almost surely, 2^47257561009 is an apocalyptic number.

It is an amenable number.

47257561009 is a deficient number, since it is larger than the sum of its proper divisors (1).

47257561009 is an equidigital number, since it uses as much as digits as its factorization.

47257561009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 529200, while the sum is 46.

The spelling of 47257561009 in words is "forty-seven billion, two hundred fifty-seven million, five hundred sixty-one thousand, nine".