202143320440 has 16 divisors (see below), whose sum is σ = 454822471080. Its totient is φ = 80857328160.

The previous prime is 202143320329. The next prime is 202143320441. The reversal of 202143320440 is 44023341202.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202143320441) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2526791466 + ... + 2526791545.

Almost surely, 2^202143320440 is an apocalyptic number.

202143320440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

202143320440 is an abundant number, since it is smaller than the sum of its proper divisors (252679150640).

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

202143320440 is a wasteful number, since it uses less digits than its factorization.

202143320440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5053583022 (or 5053583018 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 25.

Adding to 202143320440 its reverse (44023341202), we get a palindrome (246166661642).

The spelling of 202143320440 in words is "two hundred two billion, one hundred forty-three million, three hundred twenty thousand, four hundred forty".