501863928549 has 8 divisors (see below), whose sum is σ = 670917478560. Its totient is φ = 333693165456.

The previous prime is 501863928509. The next prime is 501863928593. The reversal of 501863928549 is 945829368105.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 501863928549 - 2⁹ = 501863928037 is a prime.

It is a Smith number, since the sum of its digits (60) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 501863928492 and 501863928501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (501863928509) by changing a digit.

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, 220695402 + ... + 220697675.

It is an arithmetic number, because the mean of its divisors is an integer number (83864684820).

Almost surely, 2^501863928549 is an apocalyptic number.

It is an amenable number.

501863928549 is a deficient number, since it is larger than the sum of its proper divisors (169053550011).

501863928549 is a wasteful number, since it uses less digits than its factorization.

501863928549 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 441393459.

The product of its (nonzero) digits is 18662400, while the sum is 60.

The spelling of 501863928549 in words is "five hundred one billion, eight hundred sixty-three million, nine hundred twenty-eight thousand, five hundred forty-nine".