1000504223440 has 40 divisors (see below), whose sum is σ = 2380269358368. Its totient is φ = 390894672000.

The previous prime is 1000504223431. The next prime is 1000504223447. The reversal of 1000504223440 is 443224050001.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×1000504223440² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1000504223447) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 145418686 + ... + 145425565.

Almost surely, 2^{1000504223440} is an apocalyptic number.

1000504223440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1000504223440 is an abundant number, since it is smaller than the sum of its proper divisors (1379765134928).

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

1000504223440 is a wasteful number, since it uses less digits than its factorization.

1000504223440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 290844307 (or 290844301 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 25.

Adding to 1000504223440 its reverse (443224050001), we get a palindrome (1443728273441).

The spelling of 1000504223440 in words is "one trillion, five hundred four million, two hundred twenty-three thousand, four hundred forty".