204148168813 has 2 divisors, whose sum is σ = 204148168814. Its totient is φ = 204148168812.

The previous prime is 204148168799. The next prime is 204148168891. The reversal of 204148168813 is 318861841402.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 158007840004 + 46140328809 = 397502^2 + 214803^2 .

It is a cyclic number.

It is not a de Polignac number, because 204148168813 - 2⁵ = 204148168781 is a prime.

It is a super-2 number, since 2×204148168813² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (204148168513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102074084406 + 102074084407.

It is an arithmetic number, because the mean of its divisors is an integer number (102074084407).

Almost surely, 2^204148168813 is an apocalyptic number.

It is an amenable number.

204148168813 is a deficient number, since it is larger than the sum of its proper divisors (1).

204148168813 is an equidigital number, since it uses as much as digits as its factorization.

204148168813 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 294912, while the sum is 46.

The spelling of 204148168813 in words is "two hundred four billion, one hundred forty-eight million, one hundred sixty-eight thousand, eight hundred thirteen".