503240640000 has 400 divisors, whose sum is σ = 1914647716608. Its totient is φ = 115024896000.

The previous prime is 503240639969. The next prime is 503240640017. The reversal of 503240640000 is 46042305.

It is a tau number, because it is divible by the number of its divisors (400).

It is a super-2 number, since 2×503240640000² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 6682557 + ... + 6757443.

Almost surely, 2^503240640000 is an apocalyptic number.

503240640000 is a gapful number since it is divisible by the number (50) 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 503240640000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (957323858304).

503240640000 is an abundant number, since it is smaller than the sum of its proper divisors (1411407076608).

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

503240640000 is an frugal number, since it uses more digits than its factorization.

503240640000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74935 (or 74904 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 24.

Adding to 503240640000 its reverse (46042305), we get a palindrome (503286682305).

The spelling of 503240640000 in words is "five hundred three billion, two hundred forty million, six hundred forty thousand".