503132221440 has 208 divisors, whose sum is σ = 1788698157600. Its totient is φ = 134168444928.

The previous prime is 503132221421. The next prime is 503132221441. The reversal of 503132221440 is 44122231305.

503132221440 is a `hidden beast` number, since 503 + 13 + 2 + 2 + 2 + 144 + 0 = 666.

It is a super-2 number, since 2×503132221440² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (503132221441) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 98016 + ... + 1007904.

Almost surely, 2^503132221440 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 503132221440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (894349078800).

503132221440 is an abundant number, since it is smaller than the sum of its proper divisors (1285565936160).

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

503132221440 is an equidigital number, since it uses as much as digits as its factorization.

503132221440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 909927 (or 909899 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

Adding to 503132221440 its reverse (44122231305), we get a palindrome (547254452745).

The spelling of 503132221440 in words is "five hundred three billion, one hundred thirty-two million, two hundred twenty-one thousand, four hundred forty".