10465544561 has 4 divisors (see below), whose sum is σ = 10473468324. Its totient is φ = 10457620800.

The previous prime is 10465544423. The next prime is 10465544581. The reversal of 10465544561 is 16544556401.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 16544556401 = 37 ⋅447150173.

It can be written as a sum of positive squares in 2 ways, for example, as 9943878961 + 521665600 = 99719^2 + 22840^2 .

It is a cyclic number.

It is not a de Polignac number, because 10465544561 - 2¹⁰ = 10465543537 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10465544581) 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 3 ways as a sum of consecutive naturals, for example, 3959900 + ... + 3962541.

It is an arithmetic number, because the mean of its divisors is an integer number (2618367081).

Almost surely, 2^10465544561 is an apocalyptic number.

It is an amenable number.

10465544561 is a deficient number, since it is larger than the sum of its proper divisors (7923763).

10465544561 is an equidigital number, since it uses as much as digits as its factorization.

10465544561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7923762.

The product of its (nonzero) digits is 288000, while the sum is 41.

The spelling of 10465544561 in words is "ten billion, four hundred sixty-five million, five hundred forty-four thousand, five hundred sixty-one".