204254364551 has 2 divisors, whose sum is σ = 204254364552. Its totient is φ = 204254364550.

The previous prime is 204254364491. The next prime is 204254364583. The reversal of 204254364551 is 155463452402.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 204254364551 - 2¹⁰ = 204254363527 is a prime.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 204254364499 and 204254364508.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (204254364151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102127182275 + 102127182276.

It is an arithmetic number, because the mean of its divisors is an integer number (102127182276).

Almost surely, 2^204254364551 is an apocalyptic number.

204254364551 is a deficient number, since it is larger than the sum of its proper divisors (1).

204254364551 is an equidigital number, since it uses as much as digits as its factorization.

204254364551 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576000, while the sum is 41.

The spelling of 204254364551 in words is "two hundred four billion, two hundred fifty-four million, three hundred sixty-four thousand, five hundred fifty-one".