204148168849 has 8 divisors (see below), whose sum is σ = 209678743080. Its totient is φ = 198618281856.

The previous prime is 204148168813. The next prime is 204148168891. The reversal of 204148168849 is 948861841402.

It can be written as a sum of positive squares in 4 ways, for example, as 26481703824 + 177666465025 = 162732^2 + 421505^2 .

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 204148168849 - 2²³ = 204139780241 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 204148168849.

It is not an unprimeable number, because it can be changed into a prime (204148178849) 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, 461547 + ... + 788239.

It is an arithmetic number, because the mean of its divisors is an integer number (26209842885).

Almost surely, 2^204148168849 is an apocalyptic number.

It is an amenable number.

204148168849 is a deficient number, since it is larger than the sum of its proper divisors (5530574231).

204148168849 is a wasteful number, since it uses less digits than its factorization.

204148168849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 343619.

The product of its (nonzero) digits is 3538944, while the sum is 55.

The spelling of 204148168849 in words is "two hundred four billion, one hundred forty-eight million, one hundred sixty-eight thousand, eight hundred forty-nine".