501045860920 has 128 divisors (see below), whose sum is σ = 1272788510400. Its totient is φ = 175841075200.

The previous prime is 501045860911. The next prime is 501045860933. The reversal of 501045860920 is 29068540105.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 36193200 + ... + 36207040.

Almost surely, 2^501045860920 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 501045860920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (636394255200).

501045860920 is an abundant number, since it is smaller than the sum of its proper divisors (771742649480).

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

501045860920 is a wasteful number, since it uses less digits than its factorization.

501045860920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16729 (or 16725 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 40.

The spelling of 501045860920 in words is "five hundred one billion, forty-five million, eight hundred sixty thousand, nine hundred twenty".