202103315643 has 4 divisors (see below), whose sum is σ = 269471087528. Its totient is φ = 134735543760.

The previous prime is 202103315587. The next prime is 202103315651. The reversal of 202103315643 is 346513301202.

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

It is not a de Polignac number, because 202103315643 - 2¹⁸ = 202103053499 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 202103315643.

It is not an unprimeable number, because it can be changed into a prime (202103315243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33683885938 + ... + 33683885943.

It is an arithmetic number, because the mean of its divisors is an integer number (67367771882).

Almost surely, 2^202103315643 is an apocalyptic number.

202103315643 is a deficient number, since it is larger than the sum of its proper divisors (67367771885).

202103315643 is an equidigital number, since it uses as much as digits as its factorization.

202103315643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67367771884.

The product of its (nonzero) digits is 12960, while the sum is 30.

Adding to 202103315643 its reverse (346513301202), we get a palindrome (548616616845).

The spelling of 202103315643 in words is "two hundred two billion, one hundred three million, three hundred fifteen thousand, six hundred forty-three".