505281401200 has 30 divisors (see below), whose sum is σ = 1213938567344. Its totient is φ = 202112560320.

The previous prime is 505281401167. The next prime is 505281401201. The reversal of 505281401200 is 2104182505.

It is a super-2 number, since 2×505281401200² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505281401201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 631601352 + ... + 631602151.

Almost surely, 2^505281401200 is an apocalyptic number.

505281401200 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

505281401200 is an abundant number, since it is smaller than the sum of its proper divisors (708657166144).

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

505281401200 is a wasteful number, since it uses less digits than its factorization.

505281401200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1263203521 (or 1263203510 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 28.

Adding to 505281401200 its reverse (2104182505), we get a palindrome (507385583705).

The spelling of 505281401200 in words is "five hundred five billion, two hundred eighty-one million, four hundred one thousand, two hundred".