505243210100 has 36 divisors (see below), whose sum is σ = 1154081863200. Its totient is φ = 191460584160.

The previous prime is 505243210099. The next prime is 505243210123. The reversal of 505243210100 is 1012342505.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 132956840 + ... + 132960639.

Almost surely, 2^505243210100 is an apocalyptic number.

505243210100 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

505243210100 is an abundant number, since it is smaller than the sum of its proper divisors (648838653100).

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

505243210100 is a wasteful number, since it uses less digits than its factorization.

505243210100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 265917512 (or 265917505 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 23.

Adding to 505243210100 its reverse (1012342505), we get a palindrome (506255552605).

The spelling of 505243210100 in words is "five hundred five billion, two hundred forty-three million, two hundred ten thousand, one hundred".