61104083905 has 4 divisors (see below), whose sum is σ = 73324900692. Its totient is φ = 48883267120.

The previous prime is 61104083867. The next prime is 61104083939. The reversal of 61104083905 is 50938040116.

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 33477654961 + 27626428944 = 182969^2 + 166212^2 .

It is not a de Polignac number, because 61104083905 - 2⁹ = 61104083393 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6110408386 + ... + 6110408395.

It is an arithmetic number, because the mean of its divisors is an integer number (18331225173).

Almost surely, 2^61104083905 is an apocalyptic number.

It is an amenable number.

61104083905 is a deficient number, since it is larger than the sum of its proper divisors (12220816787).

61104083905 is a wasteful number, since it uses less digits than its factorization.

61104083905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12220816786.

The product of its (nonzero) digits is 25920, while the sum is 37.

The spelling of 61104083905 in words is "sixty-one billion, one hundred four million, eighty-three thousand, nine hundred five".