200521015040 has 144 divisors (see below), whose sum is σ = 512904026880. Its totient is φ = 74944020480.

The previous prime is 200521015039. The next prime is 200521015049. The reversal of 200521015040 is 40510125002.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200521015049) 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, 1063592 + ... + 1237848.

It is an arithmetic number, because the mean of its divisors is an integer number (3561833520).

Almost surely, 2^200521015040 is an apocalyptic number.

200521015040 is a gapful number since it is divisible by the number (20) 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 200521015040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (256452013440).

200521015040 is an abundant number, since it is smaller than the sum of its proper divisors (312383011840).

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

200521015040 is a wasteful number, since it uses less digits than its factorization.

200521015040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174338 (or 174324 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 20.

The spelling of 200521015040 in words is "two hundred billion, five hundred twenty-one million, fifteen thousand, forty".