1208853538511 has 2 divisors, whose sum is σ = 1208853538512.
Its totient is φ = 1208853538510.
The previous prime is 1208853538507. The next prime is 1208853538561. The reversal of 1208853538511 is 1158353588021.
It is an a-pointer prime, because the next prime (1208853538561) can be obtained adding 1208853538511 to its sum of digits (50).
It is a weak prime.
It is a cyclic number.
It is not a de Polignac number, because 1208853538511 - 22 = 1208853538507 is a prime.
It is a super-2 number, since 2×12088535385112 (a number of 25 digits) contains 22 as substring.
It is a self number, because there is not a number n which added to its sum of digits gives 1208853538511.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (1208853538561) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 604426769255 + 604426769256.
It is an arithmetic number, because the mean of its divisors is an integer number (604426769256).
Almost surely, 21208853538511 is an apocalyptic number.
1208853538511 is a deficient number, since it is larger than the sum of its proper divisors (1).
1208853538511 is an equidigital number, since it uses as much as digits as its factorization.
1208853538511 is an odious number, because the sum of its binary digits is odd.
The product of its (nonzero) digits is 1152000, while the sum is 50.
The spelling of 1208853538511 in words is "one trillion, two hundred eight billion, eight hundred fifty-three million, five hundred thirty-eight thousand, five hundred eleven".