61055555055 has 16 divisors (see below), whose sum is σ = 106569696384. Its totient is φ = 29602693280.

The previous prime is 61055555053. The next prime is 61055555083. The reversal of 61055555055 is 55055555016.

It is not a de Polignac number, because 61055555055 - 2¹ = 61055555053 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 61055554998 and 61055555016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61055555053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 185016669 + ... + 185016998.

It is an arithmetic number, because the mean of its divisors is an integer number (6660606024).

Almost surely, 2^61055555055 is an apocalyptic number.

61055555055 is a deficient number, since it is larger than the sum of its proper divisors (45514141329).

61055555055 is a wasteful number, since it uses less digits than its factorization.

61055555055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 370033686.

The product of its (nonzero) digits is 468750, while the sum is 42.

The spelling of 61055555055 in words is "sixty-one billion, fifty-five million, five hundred fifty-five thousand, fifty-five".