61105335541 has 4 divisors (see below), whose sum is σ = 61150234284. Its totient is φ = 61060436800.

The previous prime is 61105335521. The next prime is 61105335589. The reversal of 61105335541 is 14553350116.

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 30951013041 + 30154322500 = 175929^2 + 173650^2 .

It is a cyclic number.

It is not a de Polignac number, because 61105335541 - 2⁵ = 61105335509 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 61105335497 and 61105335506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61105335521) 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, 22447330 + ... + 22450051.

It is an arithmetic number, because the mean of its divisors is an integer number (15287558571).

Almost surely, 2^61105335541 is an apocalyptic number.

It is an amenable number.

61105335541 is a deficient number, since it is larger than the sum of its proper divisors (44898743).

61105335541 is a wasteful number, since it uses less digits than its factorization.

61105335541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44898742.

The product of its (nonzero) digits is 27000, while the sum is 34.

Adding to 61105335541 its reverse (14553350116), we get a palindrome (75658685657).

The spelling of 61105335541 in words is "sixty-one billion, one hundred five million, three hundred thirty-five thousand, five hundred forty-one".