204626433843 has 64 divisors (see below), whose sum is σ = 331008437760. Its totient is φ = 124178832000.

The previous prime is 204626433839. The next prime is 204626433859. The reversal of 204626433843 is 348334626402.

It is a happy number.

204626433843 is a `hidden beast` number, since 2 + 0 + 4 + 6 + 264 + 3 + 384 + 3 = 666.

It is not a de Polignac number, because 204626433843 - 2² = 204626433839 is a prime.

It is not an unprimeable number, because it can be changed into a prime (204626438843) 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 63 ways as a sum of consecutive naturals, for example, 16628793 + ... + 16641093.

It is an arithmetic number, because the mean of its divisors is an integer number (5172006840).

Almost surely, 2^204626433843 is an apocalyptic number.

204626433843 is a deficient number, since it is larger than the sum of its proper divisors (126382003917).

204626433843 is a wasteful number, since it uses less digits than its factorization.

204626433843 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12977 (or 12971 counting only the distinct ones).

The product of its (nonzero) digits is 1990656, while the sum is 45.

The spelling of 204626433843 in words is "two hundred four billion, six hundred twenty-six million, four hundred thirty-three thousand, eight hundred forty-three".