204423150551 has 8 divisors (see below), whose sum is σ = 209192367120. Its totient is φ = 199654624512.

The previous prime is 204423150539. The next prime is 204423150557. The reversal of 204423150551 is 155051324402.

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

It is a cyclic number.

It is not a de Polignac number, because 204423150551 - 2³⁰ = 203349408727 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 (204423150557) by changing a digit.

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, 452441 + ... + 783293.

It is an arithmetic number, because the mean of its divisors is an integer number (26149045890).

Almost surely, 2^204423150551 is an apocalyptic number.

204423150551 is a deficient number, since it is larger than the sum of its proper divisors (4769216569).

204423150551 is a wasteful number, since it uses less digits than its factorization.

204423150551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 345265.

The product of its (nonzero) digits is 24000, while the sum is 32.

Adding to 204423150551 its reverse (155051324402), we get a palindrome (359474474953).

The spelling of 204423150551 in words is "two hundred four billion, four hundred twenty-three million, one hundred fifty thousand, five hundred fifty-one".