205020503500 has 48 divisors (see below), whose sum is σ = 450511981920. Its totient is φ = 81505051200.

The previous prime is 205020503491. The next prime is 205020503503. The reversal of 205020503500 is 5305020502.

It is not an unprimeable number, because it can be changed into a prime (205020503503) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1176295 + ... + 1339294.

It is an arithmetic number, because the mean of its divisors is an integer number (9385666290).

Almost surely, 2^205020503500 is an apocalyptic number.

205020503500 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

205020503500 is an abundant number, since it is smaller than the sum of its proper divisors (245491478420).

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

205020503500 is a wasteful number, since it uses less digits than its factorization.

205020503500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2515771 (or 2515759 counting only the distinct ones).

The product of its (nonzero) digits is 1500, while the sum is 22.

The spelling of 205020503500 in words is "two hundred five billion, twenty million, five hundred three thousand, five hundred".