204144622647 has 16 divisors (see below), whose sum is σ = 311173962240. Its totient is φ = 116617904352.

The previous prime is 204144622631. The next prime is 204144622739. The reversal of 204144622647 is 746226441402.

It is not a de Polignac number, because 204144622647 - 2⁴ = 204144622631 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 204144622599 and 204144622608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204148622647) 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, 1437483 + ... + 1573100.

It is an arithmetic number, because the mean of its divisors is an integer number (19448372640).

Almost surely, 2^204144622647 is an apocalyptic number.

204144622647 is a deficient number, since it is larger than the sum of its proper divisors (107029339593).

204144622647 is a wasteful number, since it uses less digits than its factorization.

204144622647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3013822.

The product of its (nonzero) digits is 516096, while the sum is 42.

The spelling of 204144622647 in words is "two hundred four billion, one hundred forty-four million, six hundred twenty-two thousand, six hundred forty-seven".