201842223653 has 4 divisors (see below), whose sum is σ = 230676827040. Its totient is φ = 173007620268.

The previous prime is 201842223629. The next prime is 201842223719. The reversal of 201842223653 is 356322248102.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 201842223653 - 2⁶ = 201842223589 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 (201842223853) 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, 14417301683 + ... + 14417301696.

It is an arithmetic number, because the mean of its divisors is an integer number (57669206760).

Almost surely, 2^201842223653 is an apocalyptic number.

It is an amenable number.

201842223653 is a deficient number, since it is larger than the sum of its proper divisors (28834603387).

201842223653 is an equidigital number, since it uses as much as digits as its factorization.

201842223653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28834603386.

The product of its (nonzero) digits is 138240, while the sum is 38.

The spelling of 201842223653 in words is "two hundred one billion, eight hundred forty-two million, two hundred twenty-three thousand, six hundred fifty-three".