208540824033 has 4 divisors (see below), whose sum is σ = 278054432048. Its totient is φ = 139027216020.

The previous prime is 208540823999. The next prime is 208540824077. The reversal of 208540824033 is 330428045802.

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 not a de Polignac number, because 208540824033 - 2¹⁰ = 208540823009 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 208540823982 and 208540824000.

It is not an unprimeable number, because it can be changed into a prime (208540824133) 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, 34756804003 + ... + 34756804008.

It is an arithmetic number, because the mean of its divisors is an integer number (69513608012).

Almost surely, 2^208540824033 is an apocalyptic number.

It is an amenable number.

208540824033 is a deficient number, since it is larger than the sum of its proper divisors (69513608015).

208540824033 is an equidigital number, since it uses as much as digits as its factorization.

208540824033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69513608014.

The product of its (nonzero) digits is 184320, while the sum is 39.

Adding to 208540824033 its reverse (330428045802), we get a palindrome (538968869835).

The spelling of 208540824033 in words is "two hundred eight billion, five hundred forty million, eight hundred twenty-four thousand, thirty-three".