11285621136 has 100 divisors (see below), whose sum is σ = 32828752000. Its totient is φ = 3742884288.

The previous prime is 11285621129. The next prime is 11285621143. The reversal of 11285621136 is 63112658211.

11285621136 is a `hidden beast` number, since 1 + 1 + 28 + 5 + 621 + 1 + 3 + 6 = 666.

It is an interprime number because it is at equal distance from previous prime (11285621129) and next prime (11285621143).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 11285621136.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 236025 + ... + 279783.

It is an arithmetic number, because the mean of its divisors is an integer number (328287520).

Almost surely, 2^11285621136 is an apocalyptic number.

11285621136 is a gapful number since it is divisible by the number (16) 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 11285621136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16414376000).

11285621136 is an abundant number, since it is smaller than the sum of its proper divisors (21543130864).

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

11285621136 is a wasteful number, since it uses less digits than its factorization.

11285621136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43978 (or 43963 counting only the distinct ones).

The product of its digits is 17280, while the sum is 36.

The spelling of 11285621136 in words is "eleven billion, two hundred eighty-five million, six hundred twenty-one thousand, one hundred thirty-six".