5518155426 has 64 divisors (see below), whose sum is σ = 13372998912. Its totient is φ = 1481859072.

The previous prime is 5518155421. The next prime is 5518155439. The reversal of 5518155426 is 6245518155.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (5518155421) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 564210 + ... + 573906.

It is an arithmetic number, because the mean of its divisors is an integer number (208953108).

Almost surely, 2^5518155426 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 5518155426, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6686499456).

5518155426 is an abundant number, since it is smaller than the sum of its proper divisors (7854843486).

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

5518155426 is a wasteful number, since it uses less digits than its factorization.

5518155426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10523.

The product of its digits is 240000, while the sum is 42.

The square root of 5518155426 is about 74284.2878810856. The cubic root of 5518155426 is about 1767.1143064950.

The spelling of 5518155426 in words is "five billion, five hundred eighteen million, one hundred fifty-five thousand, four hundred twenty-six".