5721217776 has 60 divisors (see below), whose sum is σ = 16051554480. Its totient is φ = 1902297600.

The previous prime is 5721217771. The next prime is 5721217847. The reversal of 5721217776 is 6777121275.

5721217776 is a `hidden beast` number, since 572 + 1 + 2 + 1 + 7 + 7 + 76 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5721217771) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8205 + ... + 107283.

It is an arithmetic number, because the mean of its divisors is an integer number (267525908).

Almost surely, 2^5721217776 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 5721217776, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8025777240).

5721217776 is an abundant number, since it is smaller than the sum of its proper divisors (10330336704).

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

5721217776 is a wasteful number, since it uses less digits than its factorization.

5721217776 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99494 (or 99485 counting only the distinct ones).

The product of its digits is 288120, while the sum is 45.

The square root of 5721217776 is about 75638.7319830257. The cubic root of 5721217776 is about 1788.5297140779.

The spelling of 5721217776 in words is "five billion, seven hundred twenty-one million, two hundred seventeen thousand, seven hundred seventy-six".