11969693855 has 16 divisors (see below), whose sum is σ = 16420561920. Its totient is φ = 8205299232.

The previous prime is 11969693851. The next prime is 11969693861. The reversal of 11969693855 is 55839696911.

It is a happy number.

11969693855 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 11969693855 - 2² = 11969693851 is a prime.

It is a super-2 number, since 2×11969693855² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11969693851) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 69056 + ... + 169434.

It is an arithmetic number, because the mean of its divisors is an integer number (1026285120).

Almost surely, 2^11969693855 is an apocalyptic number.

11969693855 is a deficient number, since it is larger than the sum of its proper divisors (4450868065).

11969693855 is a wasteful number, since it uses less digits than its factorization.

11969693855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103798.

The product of its digits is 15746400, while the sum is 62.

The spelling of 11969693855 in words is "eleven billion, nine hundred sixty-nine million, six hundred ninety-three thousand, eight hundred fifty-five".