11885550018 has 32 divisors (see below), whose sum is σ = 23906534400. Its totient is φ = 3939305040.

The previous prime is 11885549999. The next prime is 11885550029. The reversal of 11885550018 is 81005558811.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2704603 + ... + 2708993.

It is an arithmetic number, because the mean of its divisors is an integer number (747079200).

Almost surely, 2^11885550018 is an apocalyptic number.

11885550018 is an abundant number, since it is smaller than the sum of its proper divisors (12020984382).

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

11885550018 is a wasteful number, since it uses less digits than its factorization.

11885550018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6862.

The product of its (nonzero) digits is 64000, while the sum is 42.

The spelling of 11885550018 in words is "eleven billion, eight hundred eighty-five million, five hundred fifty thousand, eighteen".