210503513240 has 16 divisors (see below), whose sum is σ = 473632904880. Its totient is φ = 84201405280.

The previous prime is 210503513219. The next prime is 210503513243. The reversal of 210503513240 is 42315305012.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210503513243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2631293876 + ... + 2631293955.

It is an arithmetic number, because the mean of its divisors is an integer number (29602056555).

Almost surely, 2^210503513240 is an apocalyptic number.

210503513240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

210503513240 is an abundant number, since it is smaller than the sum of its proper divisors (263129391640).

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

210503513240 is a wasteful number, since it uses less digits than its factorization.

210503513240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5262587842 (or 5262587838 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 26.

Adding to 210503513240 its reverse (42315305012), we get a palindrome (252818818252).

The spelling of 210503513240 in words is "two hundred ten billion, five hundred three million, five hundred thirteen thousand, two hundred forty".