505503052780 has 72 divisors (see below), whose sum is σ = 1181605239360. Its totient is φ = 181492396800.

The previous prime is 505503052771. The next prime is 505503052819. The reversal of 505503052780 is 87250305505.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1130881 + ... + 1513240.

It is an arithmetic number, because the mean of its divisors is an integer number (16411183880).

Almost surely, 2^505503052780 is an apocalyptic number.

It is an amenable number.

505503052780 is an abundant number, since it is smaller than the sum of its proper divisors (676102186580).

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

505503052780 is a wasteful number, since it uses less digits than its factorization.

505503052780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2644231 (or 2644218 counting only the distinct ones).

The product of its (nonzero) digits is 210000, while the sum is 40.

The spelling of 505503052780 in words is "five hundred five billion, five hundred three million, fifty-two thousand, seven hundred eighty".