47491531776 has 528 divisors, whose sum is σ = 160704893440. Its totient is φ = 13377208320.

The previous prime is 47491531771. The next prime is 47491531777. The reversal of 47491531776 is 67713519474.

47491531776 is a `hidden beast` number, since 474 + 9 + 153 + 17 + 7 + 6 = 666.

It is not an unprimeable number, because it can be changed into a prime (47491531771) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 70566576 + ... + 70567248.

Almost surely, 2^47491531776 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 47491531776, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (80352446720).

47491531776 is an abundant number, since it is smaller than the sum of its proper divisors (113213361664).

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

47491531776 is a wasteful number, since it uses less digits than its factorization.

47491531776 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 762 (or 741 counting only the distinct ones).

The product of its digits is 4445280, while the sum is 54.

The spelling of 47491531776 in words is "forty-seven billion, four hundred ninety-one million, five hundred thirty-one thousand, seven hundred seventy-six".