10105510100561 has 4 divisors (see below), whose sum is σ = 10169876407092. Its totient is φ = 10041143794032.

The previous prime is 10105510100537. The next prime is 10105510100563. The reversal of 10105510100561 is 16500101550101.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 7376009606161 + 2729500494400 = 2715881^2 + 1652120^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10105510100561 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 10105510100561.

It is not an unprimeable number, because it can be changed into a prime (10105510100563) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32183153030 + ... + 32183153343.

It is an arithmetic number, because the mean of its divisors is an integer number (2542469101773).

Almost surely, 2^{10105510100561} is an apocalyptic number.

It is an amenable number.

10105510100561 is a deficient number, since it is larger than the sum of its proper divisors (64366306531).

10105510100561 is an equidigital number, since it uses as much as digits as its factorization.

10105510100561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64366306530.

The product of its (nonzero) digits is 750, while the sum is 26.

Adding to 10105510100561 its reverse (16500101550101), we get a palindrome (26605611650662).

The spelling of 10105510100561 in words is "ten trillion, one hundred five billion, five hundred ten million, one hundred thousand, five hundred sixty-one".