47091631793 has 2 divisors, whose sum is σ = 47091631794. Its totient is φ = 47091631792.

The previous prime is 47091631777. The next prime is 47091631801. The reversal of 47091631793 is 39713619074.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26016722209 + 21074909584 = 161297^2 + 145172^2 .

It is a cyclic number.

It is not a de Polignac number, because 47091631793 - 2⁴ = 47091631777 is a prime.

It is not a weakly prime, because it can be changed into another prime (47091631733) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23545815896 + 23545815897.

It is an arithmetic number, because the mean of its divisors is an integer number (23545815897).

Almost surely, 2^47091631793 is an apocalyptic number.

It is an amenable number.

47091631793 is a deficient number, since it is larger than the sum of its proper divisors (1).

47091631793 is an equidigital number, since it uses as much as digits as its factorization.

47091631793 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 857304, while the sum is 50.

The spelling of 47091631793 in words is "forty-seven billion, ninety-one million, six hundred thirty-one thousand, seven hundred ninety-three".