204000440051 has 2 divisors, whose sum is σ = 204000440052. Its totient is φ = 204000440050.

The previous prime is 204000440003. The next prime is 204000440069. The reversal of 204000440051 is 150044000402.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-204000440051 is a prime.

It is not a weakly prime, because it can be changed into another prime (204000440251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102000220025 + 102000220026.

It is an arithmetic number, because the mean of its divisors is an integer number (102000220026).

Almost surely, 2^204000440051 is an apocalyptic number.

204000440051 is a deficient number, since it is larger than the sum of its proper divisors (1).

204000440051 is an equidigital number, since it uses as much as digits as its factorization.

204000440051 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 640, while the sum is 20.

Adding to 204000440051 its reverse (150044000402), we get a palindrome (354044440453).

The spelling of 204000440051 in words is "two hundred four billion, four hundred forty thousand, fifty-one".