50509899500 has 48 divisors (see below), whose sum is σ = 110597628960. Its totient is φ = 20151944000.

The previous prime is 50509899491. The next prime is 50509899521. The reversal of 50509899500 is 599890505.

It is a Harshad number since it is a multiple of its sum of digits (50).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 64655 + ... + 324345.

It is an arithmetic number, because the mean of its divisors is an integer number (2304117270).

Almost surely, 2^50509899500 is an apocalyptic number.

50509899500 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 50509899500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (55298814480).

50509899500 is an abundant number, since it is smaller than the sum of its proper divisors (60087729460).

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

50509899500 is a wasteful number, since it uses less digits than its factorization.

50509899500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 260099 (or 260087 counting only the distinct ones).

The product of its (nonzero) digits is 729000, while the sum is 50.

The spelling of 50509899500 in words is "fifty billion, five hundred nine million, eight hundred ninety-nine thousand, five hundred".