9543638561284 has 81 divisors (see below), whose sum is σ = 17369227026207. Its totient is φ = 4588245114048.

The previous prime is 9543638561273. The next prime is 9543638561287. The reversal of 9543638561284 is 4821658363459.

It is a happy number.

The square root of 9543638561284 is 3089278.

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

It can be written as a sum of positive squares in 4 ways, for example, as 3565261476100 + 5978377085184 = 1888190^2 + 2445072^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9543638561287) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 24918116157 + ... + 24918116539.

Almost surely, 2^{9543638561284} is an apocalyptic number.

9543638561284 is the 3089278-th square number.

It is an amenable number.

9543638561284 is a deficient number, since it is larger than the sum of its proper divisors (7825588464923).

9543638561284 is an equidigital number, since it uses as much as digits as its factorization.

9543638561284 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1062 (or 531 counting only the distinct ones).

The product of its digits is 149299200, while the sum is 64.

Multiplying 9543638561284 by its sum of digits (64), we get a square (610792867922176 = 24714224²).

The spelling of 9543638561284 in words is "nine trillion, five hundred forty-three billion, six hundred thirty-eight million, five hundred sixty-one thousand, two hundred eighty-four".