209049085033 has 4 divisors (see below), whose sum is σ = 210132241108. Its totient is φ = 207965928960.

The previous prime is 209049085013. The next prime is 209049085121. The reversal of 209049085033 is 330580940902.

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 30063398544 + 178985686489 = 173388^2 + 423067^2 .

It is a cyclic number.

It is not a de Polignac number, because 209049085033 - 2⁹ = 209049084521 is a prime.

It is a super-2 number, since 2×209049085033² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (209049085013) 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, 541577748 + ... + 541578133.

It is an arithmetic number, because the mean of its divisors is an integer number (52533060277).

Almost surely, 2^209049085033 is an apocalyptic number.

It is an amenable number.

209049085033 is a deficient number, since it is larger than the sum of its proper divisors (1083156075).

209049085033 is a wasteful number, since it uses less digits than its factorization.

209049085033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1083156074.

The product of its (nonzero) digits is 233280, while the sum is 43.

The spelling of 209049085033 in words is "two hundred nine billion, forty-nine million, eighty-five thousand, thirty-three".