503240156640 has 480 divisors, whose sum is σ = 1974353584896. Its totient is φ = 119877304320.

The previous prime is 503240156623. The next prime is 503240156659. The reversal of 503240156640 is 46651042305.

503240156640 is a `hidden beast` number, since 5 + 0 + 3 + 2 + 4 + 0 + 1 + 5 + 6 + 640 = 666.

It is a tau number, because it is divible by the number of its divisors (480).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 503240156595 and 503240156604.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 5174704 + ... + 5271056.

Almost surely, 2^503240156640 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 503240156640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (987176792448).

503240156640 is an abundant number, since it is smaller than the sum of its proper divisors (1471113428256).

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

503240156640 is a wasteful number, since it uses less digits than its factorization.

503240156640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96424 (or 96407 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 36.

Adding to 503240156640 its reverse (46651042305), we get a palindrome (549891198945).

The spelling of 503240156640 in words is "five hundred three billion, two hundred forty million, one hundred fifty-six thousand, six hundred forty".