202243242453445 has 8 divisors (see below), whose sum is σ = 243698911239960. Its totient is φ = 161123247098880.

The previous prime is 202243242453437. The next prime is 202243242453563. The reversal of 202243242453445 is 544354242342202.

It can be written as a sum of positive squares in 4 ways, for example, as 67949307600769 + 134293934852676 = 8243137^2 + 11588526^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 202243242453445 - 2³ = 202243242453437 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 202243242453395 and 202243242453404.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 83918356660 + ... + 83918359069.

It is an arithmetic number, because the mean of its divisors is an integer number (30462363904995).

Almost surely, 2^{202243242453445} is an apocalyptic number.

It is an amenable number.

202243242453445 is a deficient number, since it is larger than the sum of its proper divisors (41455668786515).

202243242453445 is a wasteful number, since it uses less digits than its factorization.

202243242453445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167836715975.

The product of its (nonzero) digits is 7372800, while the sum is 46.

Adding to 202243242453445 its reverse (544354242342202), we get a palindrome (746597484795647).

The spelling of 202243242453445 in words is "two hundred two trillion, two hundred forty-three billion, two hundred forty-two million, four hundred fifty-three thousand, four hundred forty-five".