47094749021 has 2 divisors, whose sum is σ = 47094749022. Its totient is φ = 47094749020.

The previous prime is 47094749017. The next prime is 47094749071. The reversal of 47094749021 is 12094749074.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 43259424121 + 3835324900 = 207989^2 + 61930^2 .

It is a cyclic number.

It is not a de Polignac number, because 47094749021 - 2² = 47094749017 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47094749071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23547374510 + 23547374511.

It is an arithmetic number, because the mean of its divisors is an integer number (23547374511).

Almost surely, 2^47094749021 is an apocalyptic number.

It is an amenable number.

47094749021 is a deficient number, since it is larger than the sum of its proper divisors (1).

47094749021 is an equidigital number, since it uses as much as digits as its factorization.

47094749021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 508032, while the sum is 47.

The spelling of 47094749021 in words is "forty-seven billion, ninety-four million, seven hundred forty-nine thousand, twenty-one".