503505400104 has 1024 divisors, whose sum is σ = 1872046080000. Its totient is φ = 121899810816.

The previous prime is 503505400007. The next prime is 503505400157. The reversal of 503505400104 is 401004505305.

503505400104 is a `hidden beast` number, since 50 + 3 + 505 + 4 + 0 + 0 + 104 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 255 ways as a sum of consecutive naturals, for example, 1033891749 + ... + 1033892235.

It is an arithmetic number, because the mean of its divisors is an integer number (1828170000).

Almost surely, 2^503505400104 is an apocalyptic number.

503505400104 is a gapful number since it is divisible by the number (54) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 503505400104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (936023040000).

503505400104 is an abundant number, since it is smaller than the sum of its proper divisors (1368540679896).

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

503505400104 is a wasteful number, since it uses less digits than its factorization.

503505400104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 647 (or 637 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 27.

Adding to 503505400104 its reverse (401004505305), we get a palindrome (904509905409).

The spelling of 503505400104 in words is "five hundred three billion, five hundred five million, four hundred thousand, one hundred four".