47688731609 has 8 divisors (see below), whose sum is σ = 49389449160. Its totient is φ = 45991766016.

The previous prime is 47688731581. The next prime is 47688731627. The reversal of 47688731609 is 90613788674.

It can be written as a sum of positive squares in 4 ways, for example, as 4439290384 + 43249441225 = 66628^2 + 207965^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 47688731609 - 2¹⁶ = 47688666073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47688731669) 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 in 7 ways as a sum of consecutive naturals, for example, 912104 + ... + 962969.

It is an arithmetic number, because the mean of its divisors is an integer number (6173681145).

Almost surely, 2^47688731609 is an apocalyptic number.

It is an amenable number.

47688731609 is a deficient number, since it is larger than the sum of its proper divisors (1700717551).

47688731609 is a wasteful number, since it uses less digits than its factorization.

47688731609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1875979.

The product of its (nonzero) digits is 12192768, while the sum is 59.

The spelling of 47688731609 in words is "forty-seven billion, six hundred eighty-eight million, seven hundred thirty-one thousand, six hundred nine".