503405001204 has 96 divisors (see below), whose sum is σ = 1367386997760. Its totient is φ = 141162185472.

The previous prime is 503405001199. The next prime is 503405001221. The reversal of 503405001204 is 402100504305.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2975539 + ... + 3140165.

It is an arithmetic number, because the mean of its divisors is an integer number (14243614560).

Almost surely, 2^503405001204 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 503405001204, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (683693498880).

503405001204 is an abundant number, since it is smaller than the sum of its proper divisors (863981996556).

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

503405001204 is a wasteful number, since it uses less digits than its factorization.

503405001204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165317 (or 165315 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 24.

Adding to 503405001204 its reverse (402100504305), we get a palindrome (905505505509).

The spelling of 503405001204 in words is "five hundred three billion, four hundred five million, one thousand, two hundred four".