206426253001 has 2 divisors, whose sum is σ = 206426253002. Its totient is φ = 206426253000.

The previous prime is 206426252999. The next prime is 206426253013. The reversal of 206426253001 is 100352624602.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 177763424400 + 28662828601 = 421620^2 + 169301^2 .

It is a cyclic number.

It is not a de Polignac number, because 206426253001 - 2¹ = 206426252999 is a prime.

It is a super-2 number, since 2×206426253001² (a number of 23 digits) contains 22 as substring.

Together with 206426252999, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (206426253031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 103213126500 + 103213126501.

It is an arithmetic number, because the mean of its divisors is an integer number (103213126501).

Almost surely, 2^206426253001 is an apocalyptic number.

It is an amenable number.

206426253001 is a deficient number, since it is larger than the sum of its proper divisors (1).

206426253001 is an equidigital number, since it uses as much as digits as its factorization.

206426253001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17280, while the sum is 31.

Adding to 206426253001 its reverse (100352624602), we get a palindrome (306778877603).

The spelling of 206426253001 in words is "two hundred six billion, four hundred twenty-six million, two hundred fifty-three thousand, one".