47471442709 has 2 divisors, whose sum is σ = 47471442710. Its totient is φ = 47471442708.

The previous prime is 47471442661. The next prime is 47471442731. The reversal of 47471442709 is 90724417474.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 27372709809 + 20098732900 = 165447^2 + 141770^2 .

It is a cyclic number.

It is not a de Polignac number, because 47471442709 - 2¹⁵ = 47471409941 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47471445709) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23735721354 + 23735721355.

It is an arithmetic number, because the mean of its divisors is an integer number (23735721355).

Almost surely, 2^47471442709 is an apocalyptic number.

It is an amenable number.

47471442709 is a deficient number, since it is larger than the sum of its proper divisors (1).

47471442709 is an equidigital number, since it uses as much as digits as its factorization.

47471442709 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1580544, while the sum is 49.

The spelling of 47471442709 in words is "forty-seven billion, four hundred seventy-one million, four hundred forty-two thousand, seven hundred nine".