11518498518 has 16 divisors (see below), whose sum is σ = 23058559920. Its totient is φ = 3835905696.

The previous prime is 11518498507. The next prime is 11518498531. The reversal of 11518498518 is 81589481511.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 891505 + ... + 904332.

It is an arithmetic number, because the mean of its divisors is an integer number (1441159995).

Almost surely, 2^11518498518 is an apocalyptic number.

11518498518 is an abundant number, since it is smaller than the sum of its proper divisors (11540061402).

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

11518498518 is a wasteful number, since it uses less digits than its factorization.

11518498518 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1796911.

The product of its digits is 460800, while the sum is 51.

The spelling of 11518498518 in words is "eleven billion, five hundred eighteen million, four hundred ninety-eight thousand, five hundred eighteen".