503420123363164 has 72 divisors (see below), whose sum is σ = 1039294176543168. Its totient is φ = 212706669772800.

The previous prime is 503420123363149. The next prime is 503420123363189. The reversal of 503420123363164 is 461363321024305.

It is a self number, because there is not a number n which added to its sum of digits gives 503420123363164.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 26713564 + ... + 41478364.

Almost surely, 2^{503420123363164} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 503420123363164, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (519647088271584).

503420123363164 is an abundant number, since it is smaller than the sum of its proper divisors (535874053180004).

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

503420123363164 is a wasteful number, since it uses less digits than its factorization.

503420123363164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14767275 (or 14767266 counting only the distinct ones).

The product of its (nonzero) digits is 933120, while the sum is 43.

Adding to 503420123363164 its reverse (461363321024305), we get a palindrome (964783444387469).

The spelling of 503420123363164 in words is "five hundred three trillion, four hundred twenty billion, one hundred twenty-three million, three hundred sixty-three thousand, one hundred sixty-four".