47688136638 has 16 divisors (see below), whose sum is σ = 95393201040. Its totient is φ = 15893224256.

The previous prime is 47688136631. The next prime is 47688136649. The reversal of 47688136638 is 83663188674.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47688136631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 668553 + ... + 736436.

It is an arithmetic number, because the mean of its divisors is an integer number (5962075065).

Almost surely, 2^47688136638 is an apocalyptic number.

47688136638 is an abundant number, since it is smaller than the sum of its proper divisors (47705064402).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

47688136638 is a wasteful number, since it uses less digits than its factorization.

47688136638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1410651.

The product of its digits is 27869184, while the sum is 60.

The spelling of 47688136638 in words is "forty-seven billion, six hundred eighty-eight million, one hundred thirty-six thousand, six hundred thirty-eight".