11969555295880 has 512 divisors, whose sum is σ = 35616294604800. Its totient is φ = 3514446434304.

The previous prime is 11969555295857. The next prime is 11969555295889. The reversal of 11969555295880 is 8859255596911.

It is a super-2 number, since 2×11969555295880² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11969555295889) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 2151633979 + ... + 2151639541.

It is an arithmetic number, because the mean of its divisors is an integer number (69563075400).

Almost surely, 2^{11969555295880} is an apocalyptic number.

11969555295880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11969555295880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17808147302400).

11969555295880 is an abundant number, since it is smaller than the sum of its proper divisors (23646739308920).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11969555295880 is a wasteful number, since it uses less digits than its factorization.

11969555295880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6253 (or 6249 counting only the distinct ones).

The product of its (nonzero) digits is 349920000, while the sum is 73.

The spelling of 11969555295880 in words is "eleven trillion, nine hundred sixty-nine billion, five hundred fifty-five million, two hundred ninety-five thousand, eight hundred eighty".