11839555681 has 8 divisors (see below), whose sum is σ = 12294664704. Its totient is φ = 11389020960.

The previous prime is 11839555669. The next prime is 11839555687. The reversal of 11839555681 is 18655593811.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11839555681 - 2¹¹ = 11839553633 is a prime.

It is a super-2 number, since 2×11839555681² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11839555687) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1138300 + ... + 1148653.

It is an arithmetic number, because the mean of its divisors is an integer number (1536833088).

Almost surely, 2^11839555681 is an apocalyptic number.

It is an amenable number.

11839555681 is a deficient number, since it is larger than the sum of its proper divisors (455109023).

11839555681 is a wasteful number, since it uses less digits than its factorization.

11839555681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2287151.

The product of its digits is 1296000, while the sum is 52.

The spelling of 11839555681 in words is "eleven billion, eight hundred thirty-nine million, five hundred fifty-five thousand, six hundred eighty-one".