204423240021144 has 32 divisors (see below), whose sum is σ = 541120341233520. Its totient is φ = 64132781182976.

The previous prime is 204423240021101. The next prime is 204423240021179. The reversal of 204423240021144 is 441120042324402.

It is a super-2 number, since 2×204423240021144² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 250518676089 + ... + 250518676904.

Almost surely, 2^{204423240021144} is an apocalyptic number.

204423240021144 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

204423240021144 is an abundant number, since it is smaller than the sum of its proper divisors (336697101212376).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

204423240021144 is a wasteful number, since it uses less digits than its factorization.

204423240021144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 501037353019 (or 501037353015 counting only the distinct ones).

The product of its (nonzero) digits is 49152, while the sum is 33.

Adding to 204423240021144 its reverse (441120042324402), we get a palindrome (645543282345546).

The spelling of 204423240021144 in words is "two hundred four trillion, four hundred twenty-three billion, two hundred forty million, twenty-one thousand, one hundred forty-four".