11645020128 has 384 divisors, whose sum is σ = 38407219200. Its totient is φ = 3076792320.

The previous prime is 11645020099. The next prime is 11645020207. The reversal of 11645020128 is 82102054611.

11645020128 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 11645020095 and 11645020104.

It is a congruent number.

It is an unprimeable number.

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 63 ways as a sum of consecutive naturals, for example, 39743950 + ... + 39744242.

It is an arithmetic number, because the mean of its divisors is an integer number (100018800).

Almost surely, 2^11645020128 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11645020128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19203609600).

11645020128 is an abundant number, since it is smaller than the sum of its proper divisors (26762199072).

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

11645020128 is a wasteful number, since it uses less digits than its factorization.

11645020128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 415 (or 393 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 30.

Adding to 11645020128 its reverse (82102054611), we get a palindrome (93747074739).

The spelling of 11645020128 in words is "eleven billion, six hundred forty-five million, twenty thousand, one hundred twenty-eight".