2558998998 has 48 divisors (see below), whose sum is σ = 5806416096. Its totient is φ = 812972160.

The previous prime is 2558998997. The next prime is 2558999011. The reversal of 2558998998 is 8998998552.

2558998998 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2558998997) 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, 105336 + ... + 127332.

It is an arithmetic number, because the mean of its divisors is an integer number (120967002).

Almost surely, 2^2558998998 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2558998998, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2903208048).

2558998998 is an abundant number, since it is smaller than the sum of its proper divisors (3247417098).

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

2558998998 is a wasteful number, since it uses less digits than its factorization.

2558998998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22309 (or 22306 counting only the distinct ones).

The product of its digits is 167961600, while the sum is 72.

The square root of 2558998998 is about 50586.5495759495. The cubic root of 2558998998 is about 1367.8024331236.

The spelling of 2558998998 in words is "two billion, five hundred fifty-eight million, nine hundred ninety-eight thousand, nine hundred ninety-eight".