47985826538 has 24 divisors (see below), whose sum is σ = 77988443148. Its totient is φ = 22133958912.

The previous prime is 47985826531. The next prime is 47985826619. The reversal of 47985826538 is 83562858974.

It can be written as a sum of positive squares in 6 ways, for example, as 4297720249 + 43688106289 = 65557^2 + 209017^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (47985826531) 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 11 ways as a sum of consecutive naturals, for example, 530306 + ... + 614162.

Almost surely, 2^47985826538 is an apocalyptic number.

47985826538 is a deficient number, since it is larger than the sum of its proper divisors (30002616610).

47985826538 is a wasteful number, since it uses less digits than its factorization.

47985826538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85578 (or 85565 counting only the distinct ones).

The product of its digits is 116121600, while the sum is 65.

The spelling of 47985826538 in words is "forty-seven billion, nine hundred eighty-five million, eight hundred twenty-six thousand, five hundred thirty-eight".