5441121065561 has 8 divisors (see below), whose sum is σ = 5761907933544. Its totient is φ = 5120414300160.

The previous prime is 5441121065543. The next prime is 5441121065579. The reversal of 5441121065561 is 1655601211445.

It is an interprime number because it is at equal distance from previous prime (5441121065543) and next prime (5441121065579).

It can be written as a sum of positive squares in 4 ways, for example, as 962839787536 + 4478281278025 = 981244^2 + 2116195^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5441121065561 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5441121065161) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19885760 + ... + 20157521.

It is an arithmetic number, because the mean of its divisors is an integer number (720238491693).

Almost surely, 2^{5441121065561} is an apocalyptic number.

It is an amenable number.

5441121065561 is a deficient number, since it is larger than the sum of its proper divisors (320786867983).

5441121065561 is a wasteful number, since it uses less digits than its factorization.

5441121065561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40051291.

The product of its (nonzero) digits is 144000, while the sum is 41.

The spelling of 5441121065561 in words is "five trillion, four hundred forty-one billion, one hundred twenty-one million, sixty-five thousand, five hundred sixty-one".