204105255633407 has 2 divisors, whose sum is σ = 204105255633408. Its totient is φ = 204105255633406.

The previous prime is 204105255633361. The next prime is 204105255633529. The reversal of 204105255633407 is 704336552501402.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 204105255633407 - 2¹² = 204105255629311 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (204105255833407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102052627816703 + 102052627816704.

It is an arithmetic number, because the mean of its divisors is an integer number (102052627816704).

Almost surely, 2^{204105255633407} is an apocalyptic number.

204105255633407 is a deficient number, since it is larger than the sum of its proper divisors (1).

204105255633407 is an equidigital number, since it uses as much as digits as its factorization.

204105255633407 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3024000, while the sum is 47.

The spelling of 204105255633407 in words is "two hundred four trillion, one hundred five billion, two hundred fifty-five million, six hundred thirty-three thousand, four hundred seven".