47989166388 has 12 divisors (see below), whose sum is σ = 111974721600. Its totient is φ = 15996388792.

The previous prime is 47989166387. The next prime is 47989166417. The reversal of 47989166388 is 88366198974.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47989166383) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1999548588 + ... + 1999548611.

It is an arithmetic number, because the mean of its divisors is an integer number (9331226800).

Almost surely, 2^47989166388 is an apocalyptic number.

It is an amenable number.

47989166388 is an abundant number, since it is smaller than the sum of its proper divisors (63985555212).

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

47989166388 is a wasteful number, since it uses less digits than its factorization.

47989166388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3999097206 (or 3999097204 counting only the distinct ones).

The product of its digits is 125411328, while the sum is 69.

The spelling of 47989166388 in words is "forty-seven billion, nine hundred eighty-nine million, one hundred sixty-six thousand, three hundred eighty-eight".