205235662001 has 2 divisors, whose sum is σ = 205235662002. Its totient is φ = 205235662000.

The previous prime is 205235661871. The next prime is 205235662003. The reversal of 205235662001 is 100266532502.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 159740904976 + 45494757025 = 399676^2 + 213295^2 .

It is a cyclic number.

It is not a de Polignac number, because 205235662001 - 2²² = 205231467697 is a prime.

Together with 205235662003, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (205235662003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102617831000 + 102617831001.

It is an arithmetic number, because the mean of its divisors is an integer number (102617831001).

Almost surely, 2^205235662001 is an apocalyptic number.

It is an amenable number.

205235662001 is a deficient number, since it is larger than the sum of its proper divisors (1).

205235662001 is an equidigital number, since it uses as much as digits as its factorization.

205235662001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21600, while the sum is 32.

The spelling of 205235662001 in words is "two hundred five billion, two hundred thirty-five million, six hundred sixty-two thousand, one".