204021425632443 has 16 divisors (see below), whose sum is σ = 272092368239616. Its totient is φ = 135982385439840.

The previous prime is 204021425632373. The next prime is 204021425632501. The reversal of 204021425632443 is 344236524120402.

It is not a de Polignac number, because 204021425632443 - 2⁸ = 204021425632187 is a prime.

It is a super-6 number, since 6×204021425632443⁶ (a number of 87 digits) contains 666666 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 204021425632395 and 204021425632404.

It is not an unprimeable number, because it can be changed into a prime (204021425632543) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 425282733 + ... + 425762193.

It is an arithmetic number, because the mean of its divisors is an integer number (17005773014976).

Almost surely, 2^{204021425632443} is an apocalyptic number.

204021425632443 is a deficient number, since it is larger than the sum of its proper divisors (68070942607173).

204021425632443 is a wasteful number, since it uses less digits than its factorization.

204021425632443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 512434.

The product of its (nonzero) digits is 1105920, while the sum is 42.

Adding to 204021425632443 its reverse (344236524120402), we get a palindrome (548257949752845).

The spelling of 204021425632443 in words is "two hundred four trillion, twenty-one billion, four hundred twenty-five million, six hundred thirty-two thousand, four hundred forty-three".