61055550505 has 32 divisors (see below), whose sum is σ = 74883803904. Its totient is φ = 47779946496.

The previous prime is 61055550487. The next prime is 61055550509. The reversal of 61055550505 is 50505555016.

It is not a de Polignac number, because 61055550505 - 2¹⁵ = 61055517737 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61055550509) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 39313809 + ... + 39315361.

It is an arithmetic number, because the mean of its divisors is an integer number (2340118872).

Almost surely, 2^61055550505 is an apocalyptic number.

It is an amenable number.

61055550505 is a deficient number, since it is larger than the sum of its proper divisors (13828253399).

61055550505 is a wasteful number, since it uses less digits than its factorization.

61055550505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2545.

The product of its (nonzero) digits is 93750, while the sum is 37.

The spelling of 61055550505 in words is "sixty-one billion, fifty-five million, five hundred fifty thousand, five hundred five".