501112204040 has 64 divisors (see below), whose sum is σ = 1288747152000. Its totient is φ = 171786843648.

The previous prime is 501112204003. The next prime is 501112204081. The reversal of 501112204040 is 40402211105.

It is a happy number.

It is a super-2 number, since 2×501112204040² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2039492 + ... + 2271948.

It is an arithmetic number, because the mean of its divisors is an integer number (20136674250).

Almost surely, 2^501112204040 is an apocalyptic number.

It is an amenable number.

501112204040 is an abundant number, since it is smaller than the sum of its proper divisors (787634947960).

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

501112204040 is a wasteful number, since it uses less digits than its factorization.

501112204040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 240174 (or 240170 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 20.

Adding to 501112204040 its reverse (40402211105), we get a palindrome (541514415145).

The spelling of 501112204040 in words is "five hundred one billion, one hundred twelve million, two hundred four thousand, forty".