206401335001 has 4 divisors (see below), whose sum is σ = 215375306112. Its totient is φ = 197427363892.

The previous prime is 206401334989. The next prime is 206401335013. The reversal of 206401335001 is 100533104602.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (206401334989) and next prime (206401335013).

It is a cyclic number.

It is not a de Polignac number, because 206401335001 - 2¹³ = 206401326809 is a prime.

It is a super-2 number, since 2×206401335001² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (206401335601) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4486985521 + ... + 4486985566.

It is an arithmetic number, because the mean of its divisors is an integer number (53843826528).

Almost surely, 2^206401335001 is an apocalyptic number.

It is an amenable number.

206401335001 is a deficient number, since it is larger than the sum of its proper divisors (8973971111).

206401335001 is an equidigital number, since it uses as much as digits as its factorization.

206401335001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8973971110.

The product of its (nonzero) digits is 2160, while the sum is 25.

Adding to 206401335001 its reverse (100533104602), we get a palindrome (306934439603).

The spelling of 206401335001 in words is "two hundred six billion, four hundred one million, three hundred thirty-five thousand, one".