47009177856 has 81 divisors (see below), whose sum is σ = 135569061901. Its totient is φ = 15666256896.

The previous prime is 47009177851. The next prime is 47009177879. The reversal of 47009177856 is 65877190074.

The square root of 47009177856 is 216816.

It is a perfect power (a square), and thus also a powerful number.

47009177856 is a `hidden beast` number, since 470 + 0 + 91 + 7 + 7 + 85 + 6 = 666.

It can be written as a sum of positive squares in only one way, i.e., 187142400 + 46822035456 = 13680^2 + 216384^2 .

It is a Duffinian number.

It is a zygodrome in base 3.

It is not an unprimeable number, because it can be changed into a prime (47009177851) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 10404910 + ... + 10409426.

Almost surely, 2^47009177856 is an apocalyptic number.

47009177856 is the 216816-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 47009177856

47009177856 is an abundant number, since it is smaller than the sum of its proper divisors (88559884045).

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

47009177856 is an frugal number, since it uses more digits than its factorization.

47009177856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9056 (or 4522 counting only the distinct ones).

The product of its (nonzero) digits is 2963520, while the sum is 54.

The spelling of 47009177856 in words is "forty-seven billion, nine million, one hundred seventy-seven thousand, eight hundred fifty-six".