61110605605 has 16 divisors (see below), whose sum is σ = 84989240064. Its totient is φ = 41314210560.

The previous prime is 61110605603. The next prime is 61110605623. The reversal of 61110605605 is 50650601116.

It is not a de Polignac number, because 61110605605 - 2¹ = 61110605603 is a prime.

It is a super-2 number, since 2×61110605605² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61110605603) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12293412 + ... + 12298381.

It is an arithmetic number, because the mean of its divisors is an integer number (5311827504).

Almost surely, 2^61110605605 is an apocalyptic number.

It is an amenable number.

61110605605 is a deficient number, since it is larger than the sum of its proper divisors (23878634459).

61110605605 is a wasteful number, since it uses less digits than its factorization.

61110605605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24591876.

The product of its (nonzero) digits is 5400, while the sum is 31.

The spelling of 61110605605 in words is "sixty-one billion, one hundred ten million, six hundred five thousand, six hundred five".