505278028028 has 24 divisors (see below), whose sum is σ = 885550748544. Its totient is φ = 252263808000.

The previous prime is 505278027979. The next prime is 505278028081. The reversal of 505278028028 is 820820872505.

It is a super-3 number, since 3×505278028028³ (a number of 36 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 7494308 + ... + 7561428.

It is an arithmetic number, because the mean of its divisors is an integer number (36897947856).

Almost surely, 2^505278028028 is an apocalyptic number.

It is an amenable number.

505278028028 is a deficient number, since it is larger than the sum of its proper divisors (380272720516).

505278028028 is a wasteful number, since it uses less digits than its factorization.

505278028028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69893 (or 69891 counting only the distinct ones).

The product of its (nonzero) digits is 716800, while the sum is 47.

The spelling of 505278028028 in words is "five hundred five billion, two hundred seventy-eight million, twenty-eight thousand, twenty-eight".