202540215143 has 4 divisors (see below), whose sum is σ = 231474531600. Its totient is φ = 173605898688.

The previous prime is 202540215131. The next prime is 202540215187. The reversal of 202540215143 is 341512045202.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-202540215143 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202540215343) 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, 14467158218 + ... + 14467158231.

It is an arithmetic number, because the mean of its divisors is an integer number (57868632900).

Almost surely, 2^202540215143 is an apocalyptic number.

202540215143 is a deficient number, since it is larger than the sum of its proper divisors (28934316457).

202540215143 is an equidigital number, since it uses as much as digits as its factorization.

202540215143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28934316456.

The product of its (nonzero) digits is 9600, while the sum is 29.

The spelling of 202540215143 in words is "two hundred two billion, five hundred forty million, two hundred fifteen thousand, one hundred forty-three".