500020401040 has 160 divisors (see below), whose sum is σ = 1185084006912. Its totient is φ = 196177920000.

The previous prime is 500020400993. The next prime is 500020401079. The reversal of 500020401040 is 40104020005.

It is a Harshad number since it is a multiple of its sum of digits (16).

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 31 ways as a sum of consecutive naturals, for example, 484985325 + ... + 484986355.

Almost surely, 2^500020401040 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 500020401040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (592542003456).

500020401040 is an abundant number, since it is smaller than the sum of its proper divisors (685063605872).

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

500020401040 is a wasteful number, since it uses less digits than its factorization.

500020401040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1649 (or 1643 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 16.

Adding to 500020401040 its reverse (40104020005), we get a palindrome (540124421045).

The spelling of 500020401040 in words is "five hundred billion, twenty million, four hundred one thousand, forty".