503156400203400 has 96 divisors (see below), whose sum is σ = 1560114683397600. Its totient is φ = 134146666483200.

The previous prime is 503156400203293. The next prime is 503156400203447. The reversal of 503156400203400 is 4302004651305.

It is a super-2 number, since 2×503156400203400² (a number of 30 digits) contains 22 as substring.

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, 85827646 + ... + 91502445.

It is an arithmetic number, because the mean of its divisors is an integer number (16251194618725).

Almost surely, 2^{503156400203400} is an apocalyptic number.

503156400203400 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

503156400203400 is an abundant number, since it is smaller than the sum of its proper divisors (1056958283194200).

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

503156400203400 is a wasteful number, since it uses less digits than its factorization.

503156400203400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 177334839 (or 177334830 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 33.

Adding to 503156400203400 its reverse (4302004651305), we get a palindrome (507458404854705).

The spelling of 503156400203400 in words is "five hundred three trillion, one hundred fifty-six billion, four hundred million, two hundred three thousand, four hundred".