47817638792 has 128 divisors (see below), whose sum is σ = 114961248000. Its totient is φ = 18101698560.

The previous prime is 47817638723. The next prime is 47817638797. The reversal of 47817638792 is 29783671874.

It is not an unprimeable number, because it can be changed into a prime (47817638797) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 32113184 + ... + 32114672.

It is an arithmetic number, because the mean of its divisors is an integer number (898134750).

Almost surely, 2^47817638792 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 47817638792, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (57480624000).

47817638792 is an abundant number, since it is smaller than the sum of its proper divisors (67143609208).

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

47817638792 is a wasteful number, since it uses less digits than its factorization.

47817638792 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2959 (or 2955 counting only the distinct ones).

The product of its digits is 28449792, while the sum is 62.

The spelling of 47817638792 in words is "forty-seven billion, eight hundred seventeen million, six hundred thirty-eight thousand, seven hundred ninety-two".