11621570369328 has 120 divisors (see below), whose sum is σ = 32936640759360. Its totient is φ = 3824863257600.

The previous prime is 11621570369303. The next prime is 11621570369329. The reversal of 11621570369328 is 82396307512611.

It is a happy number.

11621570369328 is a `hidden beast` number, since 1 + 1 + 6 + 2 + 1 + 570 + 3 + 69 + 3 + 2 + 8 = 666.

11621570369328 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (11621570369329) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8337225 + ... + 9630807.

It is an arithmetic number, because the mean of its divisors is an integer number (274472006328).

Almost surely, 2^{11621570369328} is an apocalyptic number.

11621570369328 is a gapful number since it is divisible by the number (18) 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 11621570369328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16468320379680).

11621570369328 is an abundant number, since it is smaller than the sum of its proper divisors (21315070390032).

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

11621570369328 is a wasteful number, since it uses less digits than its factorization.

11621570369328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1294387 (or 1294378 counting only the distinct ones).

The product of its (nonzero) digits is 3265920, while the sum is 54.

The spelling of 11621570369328 in words is "eleven trillion, six hundred twenty-one billion, five hundred seventy million, three hundred sixty-nine thousand, three hundred twenty-eight".