11554121008 has 20 divisors (see below), whose sum is σ = 23564326360. Its totient is φ = 5473004544.

The previous prime is 11554120987. The next prime is 11554121021. The reversal of 11554121008 is 80012145511.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19003185 + ... + 19003792.

It is an arithmetic number, because the mean of its divisors is an integer number (1178216318).

Almost surely, 2^11554121008 is an apocalyptic number.

It is an amenable number.

11554121008 is an abundant number, since it is smaller than the sum of its proper divisors (12010205352).

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

11554121008 is a wasteful number, since it uses less digits than its factorization.

11554121008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38007004 (or 38006998 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 28.

Adding to 11554121008 its reverse (80012145511), we get a palindrome (91566266519).

The spelling of 11554121008 in words is "eleven billion, five hundred fifty-four million, one hundred twenty-one thousand, eight".