47444734561 has 6 divisors (see below), whose sum is σ = 55190813730. Its totient is φ = 40666915296.

The previous prime is 47444734559. The next prime is 47444734577. The reversal of 47444734561 is 16543744474.

47444734561 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 33656103936 + 13788630625 = 183456^2 + 117425^2 .

It is not a de Polignac number, because 47444734561 - 2¹ = 47444734559 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (49), and also a Moran number because the ratio is a prime number: 968259889 = 47444734561 / (4 + 7 + 4 + 4 + 4 + 7 + 3 + 4 + 5 + 6 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47444734501) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 484129896 + ... + 484129993.

It is an arithmetic number, because the mean of its divisors is an integer number (9198468955).

Almost surely, 2^47444734561 is an apocalyptic number.

It is an amenable number.

47444734561 is a deficient number, since it is larger than the sum of its proper divisors (7746079169).

47444734561 is an equidigital number, since it uses as much as digits as its factorization.

47444734561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 968259903 (or 968259896 counting only the distinct ones).

The product of its digits is 4515840, while the sum is 49.

The spelling of 47444734561 in words is "forty-seven billion, four hundred forty-four million, seven hundred thirty-four thousand, five hundred sixty-one".