501435134220 has 96 divisors (see below), whose sum is σ = 1445889715200. Its totient is φ = 129785670144.

The previous prime is 501435134177. The next prime is 501435134231. The reversal of 501435134220 is 22431534105.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 616849 + ... + 1176168.

It is an arithmetic number, because the mean of its divisors is an integer number (15061351200).

Almost surely, 2^501435134220 is an apocalyptic number.

It is an amenable number.

501435134220 is an abundant number, since it is smaller than the sum of its proper divisors (944454580980).

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

501435134220 is a wasteful number, since it uses less digits than its factorization.

501435134220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1793167 (or 1793165 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 30.

Adding to 501435134220 its reverse (22431534105), we get a palindrome (523866668325).

The spelling of 501435134220 in words is "five hundred one billion, four hundred thirty-five million, one hundred thirty-four thousand, two hundred twenty".