201143510020 has 48 divisors (see below), whose sum is σ = 428896258560. Its totient is φ = 79225750656.

The previous prime is 201143509999. The next prime is 201143510041. The reversal of 201143510020 is 20015341102.

It is an interprime number because it is at equal distance from previous prime (201143509999) and next prime (201143510041).

It is a self number, because there is not a number n which added to its sum of digits gives 201143510020.

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, 418689 + ... + 759991.

It is an arithmetic number, because the mean of its divisors is an integer number (8935338720).

Almost surely, 2^201143510020 is an apocalyptic number.

201143510020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201143510020 is an abundant number, since it is smaller than the sum of its proper divisors (227752748540).

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

201143510020 is a wasteful number, since it uses less digits than its factorization.

201143510020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 341764 (or 341762 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 19.

Adding to 201143510020 its reverse (20015341102), we get a palindrome (221158851122).

The spelling of 201143510020 in words is "two hundred one billion, one hundred forty-three million, five hundred ten thousand, twenty".