505231267561520 has 80 divisors (see below), whose sum is σ = 1175136520615680. Its totient is φ = 202010997157632.

The previous prime is 505231267561487. The next prime is 505231267561547. The reversal of 505231267561520 is 25165762132505.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×505231267561520² (a number of 30 digits) contains 22 as substring.

It is an unprimeable number.

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, 4882211699 + ... + 4882315181.

It is an arithmetic number, because the mean of its divisors is an integer number (14689206507696).

Almost surely, 2^{505231267561520} is an apocalyptic number.

It is an amenable number.

505231267561520 is an abundant number, since it is smaller than the sum of its proper divisors (669905253054160).

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

505231267561520 is a wasteful number, since it uses less digits than its factorization.

505231267561520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127522 (or 127516 counting only the distinct ones).

The product of its (nonzero) digits is 3780000, while the sum is 50.

The spelling of 505231267561520 in words is "five hundred five trillion, two hundred thirty-one billion, two hundred sixty-seven million, five hundred sixty-one thousand, five hundred twenty".