11056551018 has 48 divisors (see below), whose sum is σ = 23788030080. Its totient is φ = 3424771584.

The previous prime is 11056551013. The next prime is 11056551031. The reversal of 11056551018 is 81015565011.

It is a self number, because there is not a number n which added to its sum of digits gives 11056551018.

It is not an unprimeable number, because it can be changed into a prime (11056551013) 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, 96630 + ... + 177342.

It is an arithmetic number, because the mean of its divisors is an integer number (495583960).

Almost surely, 2^11056551018 is an apocalyptic number.

11056551018 is an abundant number, since it is smaller than the sum of its proper divisors (12731479062).

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

11056551018 is a wasteful number, since it uses less digits than its factorization.

11056551018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80831 (or 80814 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 33.

The spelling of 11056551018 in words is "eleven billion, fifty-six million, five hundred fifty-one thousand, eighteen".