206013256033 has 4 divisors (see below), whose sum is σ = 221860429588. Its totient is φ = 190166082480.

The previous prime is 206013256027. The next prime is 206013256081. The reversal of 206013256033 is 330652310602.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 28685519424 + 177327736609 = 169368^2 + 421103^2 .

It is a cyclic number.

It is not a de Polignac number, because 206013256033 - 2¹³ = 206013247841 is a prime.

It is a super-2 number, since 2×206013256033² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 206013255986 and 206013256004.

It is not an unprimeable number, because it can be changed into a prime (206013256003) 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, 7923586758 + ... + 7923586783.

It is an arithmetic number, because the mean of its divisors is an integer number (55465107397).

Almost surely, 2^206013256033 is an apocalyptic number.

It is an amenable number.

206013256033 is a deficient number, since it is larger than the sum of its proper divisors (15847173555).

206013256033 is a wasteful number, since it uses less digits than its factorization.

206013256033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15847173554.

The product of its (nonzero) digits is 19440, while the sum is 31.

Adding to 206013256033 its reverse (330652310602), we get a palindrome (536665566635).

The spelling of 206013256033 in words is "two hundred six billion, thirteen million, two hundred fifty-six thousand, thirty-three".