505545005436 has 24 divisors (see below), whose sum is σ = 1179664416000. Its totient is φ = 168506515632.

The previous prime is 505545005411. The next prime is 505545005447. The reversal of 505545005436 is 634500545505.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 810186 + ... + 1291313.

It is an arithmetic number, because the mean of its divisors is an integer number (49152684000).

Almost surely, 2^505545005436 is an apocalyptic number.

It is an amenable number.

505545005436 is an abundant number, since it is smaller than the sum of its proper divisors (674119410564).

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

505545005436 is a wasteful number, since it uses less digits than its factorization.

505545005436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2121553 (or 2121551 counting only the distinct ones).

The product of its (nonzero) digits is 900000, while the sum is 42.

The spelling of 505545005436 in words is "five hundred five billion, five hundred forty-five million, five thousand, four hundred thirty-six".