204144622646 has 4 divisors (see below), whose sum is σ = 306216933972. Its totient is φ = 102072311322.

The previous prime is 204144622631. The next prime is 204144622739. The reversal of 204144622646 is 646226441402.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51036155660 + ... + 51036155663.

It is an arithmetic number, because the mean of its divisors is an integer number (76554233493).

Almost surely, 2^204144622646 is an apocalyptic number.

204144622646 is a deficient number, since it is larger than the sum of its proper divisors (102072311326).

204144622646 is a wasteful number, since it uses less digits than its factorization.

204144622646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102072311325.

The product of its (nonzero) digits is 442368, while the sum is 41.

The spelling of 204144622646 in words is "two hundred four billion, one hundred forty-four million, six hundred twenty-two thousand, six hundred forty-six".