1208782680811 has 4 divisors (see below), whose sum is σ = 1213798376824. Its totient is φ = 1203766984800.

The previous prime is 1208782680779. The next prime is 1208782680827. The reversal of 1208782680811 is 1180862878021.

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

It is a cyclic number.

It is not a de Polignac number, because 1208782680811 - 2⁵ = 1208782680779 is a prime.

It is a super-2 number, since 2×1208782680811² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1208782680011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2507847645 + ... + 2507848126.

It is an arithmetic number, because the mean of its divisors is an integer number (303449594206).

Almost surely, 2^{1208782680811} is an apocalyptic number.

1208782680811 is a deficient number, since it is larger than the sum of its proper divisors (5015696013).

1208782680811 is an equidigital number, since it uses as much as digits as its factorization.

1208782680811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5015696012.

The product of its (nonzero) digits is 688128, while the sum is 52.

The spelling of 1208782680811 in words is "one trillion, two hundred eight billion, seven hundred eighty-two million, six hundred eighty thousand, eight hundred eleven".