505556555970 has 32 divisors (see below), whose sum is σ = 1213354646208. Its totient is φ = 134812980288.

The previous prime is 505556555951. The next prime is 505556555971. The reversal of 505556555970 is 79555655505.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 505556555970.

It is not an unprimeable number, because it can be changed into a prime (505556555971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3267192 + ... + 3418428.

It is an arithmetic number, because the mean of its divisors is an integer number (37917332694).

Almost surely, 2^505556555970 is an apocalyptic number.

505556555970 is an abundant number, since it is smaller than the sum of its proper divisors (707798090238).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

505556555970 is a wasteful number, since it uses less digits than its factorization.

505556555970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 262674.

The product of its (nonzero) digits is 29531250, while the sum is 57.

The spelling of 505556555970 in words is "five hundred five billion, five hundred fifty-six million, five hundred fifty-five thousand, nine hundred seventy".