503403012516 has 12 divisors (see below), whose sum is σ = 1174607029232. Its totient is φ = 167801004168.

The previous prime is 503403012493. The next prime is 503403012517. The reversal of 503403012516 is 615210304305.

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

It is not an unprimeable number, because it can be changed into a prime (503403012517) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20975125510 + ... + 20975125533.

Almost surely, 2^503403012516 is an apocalyptic number.

It is an amenable number.

503403012516 is an abundant number, since it is smaller than the sum of its proper divisors (671204016716).

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

503403012516 is a wasteful number, since it uses less digits than its factorization.

503403012516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41950251050 (or 41950251048 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 30.

The spelling of 503403012516 in words is "five hundred three billion, four hundred three million, twelve thousand, five hundred sixteen".