5577121836 has 360 divisors, whose sum is σ = 17865547392. Its totient is φ = 1505433600.

The previous prime is 5577121829. The next prime is 5577121843. The reversal of 5577121836 is 6381217755.

It is a happy number.

5577121836 is a `hidden beast` number, since 557 + 7 + 12 + 1 + 83 + 6 = 666.

It is an interprime number because it is at equal distance from previous prime (5577121829) and next prime (5577121843).

It is a super-2 number, since 2×5577121836² = 62208575947176021792, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 5577121791 and 5577121800.

It is an unprimeable number.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 15799036 + ... + 15799388.

Almost surely, 2^5577121836 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 5577121836, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8932773696).

5577121836 is an abundant number, since it is smaller than the sum of its proper divisors (12288425556).

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

5577121836 is a wasteful number, since it uses less digits than its factorization.

5577121836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 435 (or 413 counting only the distinct ones).

The product of its digits is 352800, while the sum is 45.

The square root of 5577121836 is about 74680.1301284351. The cubic root of 5577121836 is about 1773.3864154719.

The spelling of 5577121836 in words is "five billion, five hundred seventy-seven million, one hundred twenty-one thousand, eight hundred thirty-six".