47327938561 has 2 divisors, whose sum is σ = 47327938562. Its totient is φ = 47327938560.

The previous prime is 47327938543. The next prime is 47327938577. The reversal of 47327938561 is 16583972374.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 44930856961 + 2397081600 = 211969^2 + 48960^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-47327938561 is a prime.

It is not a weakly prime, because it can be changed into another prime (47327935561) 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, 23663969280 + 23663969281.

It is an arithmetic number, because the mean of its divisors is an integer number (23663969281).

Almost surely, 2^47327938561 is an apocalyptic number.

It is an amenable number.

47327938561 is a deficient number, since it is larger than the sum of its proper divisors (1).

47327938561 is an equidigital number, since it uses as much as digits as its factorization.

47327938561 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7620480, while the sum is 55.

The spelling of 47327938561 in words is "forty-seven billion, three hundred twenty-seven million, nine hundred thirty-eight thousand, five hundred sixty-one".