3557980560121 has 27 divisors (see below), whose sum is σ = 3873037552839. Its totient is φ = 3267064412352.

The previous prime is 3557980560073. The next prime is 3557980560139. The reversal of 3557980560121 is 1210650897553.

It is a happy number.

The square root of 3557980560121 is 1886261.

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

It can be written as a sum of positive squares in 13 ways, for example, as 3467271167721 + 90709392400 = 1862061^2 + 301180^2 .

It is not a de Polignac number, because 3557980560121 - 2⁷ = 3557980559993 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3557980560721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 9146479395 + ... + 9146479783.

Almost surely, 2^{3557980560121} is an apocalyptic number.

3557980560121 is the 1886261-st square number.

3557980560121 is the 943131-st centered octagonal number.

It is an amenable number.

3557980560121 is a deficient number, since it is larger than the sum of its proper divisors (315056992718).

3557980560121 is an frugal number, since it uses more digits than its factorization.

3557980560121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1550 (or 775 counting only the distinct ones).

The product of its (nonzero) digits is 2268000, while the sum is 52.

The spelling of 3557980560121 in words is "three trillion, five hundred fifty-seven billion, nine hundred eighty million, five hundred sixty thousand, one hundred twenty-one".