75533727556 has 81 divisors (see below), whose sum is σ = 156628906749. Its totient is φ = 31779605088.

The previous prime is 75533727551. The next prime is 75533727557. The reversal of 75533727556 is 65572733557.

The square root of 75533727556 is 274834.

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

It can be written as a sum of positive squares in only one way, i.e., 71465328900 + 4068398656 = 267330^2 + 63784^2 .

It is a junction number, because it is equal to n+sod(n) for n = 75533727497 and 75533727506.

It is not an unprimeable number, because it can be changed into a prime (75533727551) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 257794146 + ... + 257794438.

Almost surely, 2^75533727556 is an apocalyptic number.

75533727556 is the 274834-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 75533727556

75533727556 is an abundant number, since it is smaller than the sum of its proper divisors (81095179193).

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

75533727556 is an equidigital number, since it uses as much as digits as its factorization.

75533727556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 738 (or 369 counting only the distinct ones).

The product of its digits is 23152500, while the sum is 55.

The spelling of 75533727556 in words is "seventy-five billion, five hundred thirty-three million, seven hundred twenty-seven thousand, five hundred fifty-six".