11681398311 has 16 divisors (see below), whose sum is σ = 17041559808. Its totient is φ = 7058620800.

The previous prime is 11681398291. The next prime is 11681398319. The reversal of 11681398311 is 11389318611.

It is not a de Polignac number, because 11681398311 - 2²⁶ = 11614289447 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11681398319) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 514075 + ... + 536316.

It is an arithmetic number, because the mean of its divisors is an integer number (1065097488).

Almost surely, 2^11681398311 is an apocalyptic number.

11681398311 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

11681398311 is a deficient number, since it is larger than the sum of its proper divisors (5360161497).

11681398311 is a wasteful number, since it uses less digits than its factorization.

11681398311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1050742.

The product of its digits is 31104, while the sum is 42.

The spelling of 11681398311 in words is "eleven billion, six hundred eighty-one million, three hundred ninety-eight thousand, three hundred eleven".