505000870920 has 512 divisors, whose sum is σ = 2073626956800. Its totient is φ = 106455638016.

The previous prime is 505000870901. The next prime is 505000870951. The reversal of 505000870920 is 29078000505.

505000870920 is a `hidden beast` number, since 50 + 500 + 0 + 87 + 0 + 9 + 20 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 219851212 + ... + 219853508.

It is an arithmetic number, because the mean of its divisors is an integer number (4050052650).

Almost surely, 2^505000870920 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 505000870920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1036813478400).

505000870920 is an abundant number, since it is smaller than the sum of its proper divisors (1568626085880).

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

505000870920 is a wasteful number, since it uses less digits than its factorization.

505000870920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4574 (or 4564 counting only the distinct ones).

The product of its (nonzero) digits is 25200, while the sum is 36.

The spelling of 505000870920 in words is "five hundred five billion, eight hundred seventy thousand, nine hundred twenty".