61105105505 has 8 divisors (see below), whose sum is σ = 73327680000. Its totient is φ = 48883048816.

The previous prime is 61105105493. The next prime is 61105105511. The reversal of 61105105505 is 50550150116.

It is a happy number.

61105105505 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 61105105505 - 2⁶ = 61105105441 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 212096 + ... + 408894.

It is an arithmetic number, because the mean of its divisors is an integer number (9165960000).

Almost surely, 2^61105105505 is an apocalyptic number.

It is an amenable number.

61105105505 is a deficient number, since it is larger than the sum of its proper divisors (12222574495).

61105105505 is a wasteful number, since it uses less digits than its factorization.

61105105505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 258903.

The product of its (nonzero) digits is 3750, while the sum is 29.

The spelling of 61105105505 in words is "sixty-one billion, one hundred five million, one hundred five thousand, five hundred five".