11554555266320 has 320 divisors, whose sum is σ = 29765594880000. Its totient is φ = 4136498995200.

The previous prime is 11554555266301. The next prime is 11554555266389. The reversal of 11554555266320 is 2366255545511.

It is a super-2 number, since 2×11554555266320² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

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 63 ways as a sum of consecutive naturals, for example, 13115272280 + ... + 13115273160.

It is an arithmetic number, because the mean of its divisors is an integer number (93017484000).

Almost surely, 2^{11554555266320} is an apocalyptic number.

11554555266320 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 11554555266320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14882797440000).

11554555266320 is an abundant number, since it is smaller than the sum of its proper divisors (18211039613680).

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

11554555266320 is a wasteful number, since it uses less digits than its factorization.

11554555266320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1822 (or 1816 counting only the distinct ones).

The product of its (nonzero) digits is 5400000, while the sum is 50.

The spelling of 11554555266320 in words is "eleven trillion, five hundred fifty-four billion, five hundred fifty-five million, two hundred sixty-six thousand, three hundred twenty".