204666826431 has 8 divisors (see below), whose sum is σ = 272909854720. Its totient is φ = 136434174552.

The previous prime is 204666826423. The next prime is 204666826439. The reversal of 204666826431 is 134628666402.

It is an interprime number because it is at equal distance from previous prime (204666826423) and next prime (204666826439).

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

It is not a de Polignac number, because 204666826431 - 2³ = 204666826423 is a prime.

It is a super-2 number, since 2×204666826431² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204666826439) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2547961 + ... + 2627058.

It is an arithmetic number, because the mean of its divisors is an integer number (34113731840).

Almost surely, 2^204666826431 is an apocalyptic number.

204666826431 is a deficient number, since it is larger than the sum of its proper divisors (68243028289).

204666826431 is a wasteful number, since it uses less digits than its factorization.

204666826431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5188205.

The product of its (nonzero) digits is 1990656, while the sum is 48.

The spelling of 204666826431 in words is "two hundred four billion, six hundred sixty-six million, eight hundred twenty-six thousand, four hundred thirty-one".