8018799558 has 128 divisors (see below), whose sum is σ = 21215969280. Its totient is φ = 1957374720.

The previous prime is 8018799553. The next prime is 8018799571. The reversal of 8018799558 is 8559978108.

It is a super-2 number, since 2×8018799558² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8018799553) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1111210 + ... + 1118402.

It is an arithmetic number, because the mean of its divisors is an integer number (165749760).

Almost surely, 2^8018799558 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8018799558, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10607984640).

8018799558 is an abundant number, since it is smaller than the sum of its proper divisors (13197169722).

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

8018799558 is a wasteful number, since it uses less digits than its factorization.

8018799558 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7362.

The product of its (nonzero) digits is 7257600, while the sum is 60.

The square root of 8018799558 is about 89547.7501559922. The cubic root of 8018799558 is about 2001.5654042684.

The spelling of 8018799558 in words is "eight billion, eighteen million, seven hundred ninety-nine thousand, five hundred fifty-eight".