5577621720 has 128 divisors (see below), whose sum is σ = 18303840000. Its totient is φ = 1348462080.

The previous prime is 5577621691. The next prime is 5577621737. The reversal of 5577621720 is 271267755.

It is a super-2 number, since 2×5577621720² = 62219728102831516800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 494706 + ... + 505854.

It is an arithmetic number, because the mean of its divisors is an integer number (142998750).

Almost surely, 2^5577621720 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 5577621720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9151920000).

5577621720 is an abundant number, since it is smaller than the sum of its proper divisors (12726218280).

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

5577621720 is a wasteful number, since it uses less digits than its factorization.

5577621720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11553 (or 11549 counting only the distinct ones).

The product of its (nonzero) digits is 205800, while the sum is 42.

The square root of 5577621720 is about 74683.4768874615. The cubic root of 5577621720 is about 1773.4393974601.

The spelling of 5577621720 in words is "five billion, five hundred seventy-seven million, six hundred twenty-one thousand, seven hundred twenty".