204423520202 has 16 divisors (see below), whose sum is σ = 334521252000. Its totient is φ = 92916993840.

The previous prime is 204423520177. The next prime is 204423520229. The reversal of 204423520202 is 202025324402.

It is a happy number.

It is a super-2 number, since 2×204423520202² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 731324 + ... + 971432.

It is an arithmetic number, because the mean of its divisors is an integer number (20907578250).

Almost surely, 2^204423520202 is an apocalyptic number.

204423520202 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

204423520202 is a deficient number, since it is larger than the sum of its proper divisors (130097731798).

204423520202 is a wasteful number, since it uses less digits than its factorization.

204423520202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 278821.

The product of its (nonzero) digits is 7680, while the sum is 26.

Adding to 204423520202 its reverse (202025324402), we get a palindrome (406448844604).

The spelling of 204423520202 in words is "two hundred four billion, four hundred twenty-three million, five hundred twenty thousand, two hundred two".