61055555505 has 128 divisors (see below), whose sum is σ = 120921984000. Its totient is φ = 26204516352.

The previous prime is 61055555501. The next prime is 61055555537. The reversal of 61055555505 is 50555555016.

It is not a de Polignac number, because 61055555505 - 2² = 61055555501 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (61055555501) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 57114111 + ... + 57115179.

It is an arithmetic number, because the mean of its divisors is an integer number (944703000).

Almost surely, 2^61055555505 is an apocalyptic number.

It is an amenable number.

61055555505 is a deficient number, since it is larger than the sum of its proper divisors (59866428495).

61055555505 is a wasteful number, since it uses less digits than its factorization.

61055555505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1768 (or 1754 counting only the distinct ones).

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

The spelling of 61055555505 in words is "sixty-one billion, fifty-five million, five hundred fifty-five thousand, five hundred five".