505820081076 has 12 divisors (see below), whose sum is σ = 1180246855872. Its totient is φ = 168606693688.

The previous prime is 505820081047. The next prime is 505820081077. The reversal of 505820081076 is 670180028505.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505820081077) 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 3 ways as a sum of consecutive naturals, for example, 21075836700 + ... + 21075836723.

It is an arithmetic number, because the mean of its divisors is an integer number (98353904656).

Almost surely, 2^505820081076 is an apocalyptic number.

It is an amenable number.

505820081076 is an abundant number, since it is smaller than the sum of its proper divisors (674426774796).

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

505820081076 is a wasteful number, since it uses less digits than its factorization.

505820081076 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42151673430 (or 42151673428 counting only the distinct ones).

The product of its (nonzero) digits is 134400, while the sum is 42.

The spelling of 505820081076 in words is "five hundred five billion, eight hundred twenty million, eighty-one thousand, seventy-six".