2558891235578 has 16 divisors (see below), whose sum is σ = 3920092032384. Its totient is φ = 1252195119840.

The previous prime is 2558891235541. The next prime is 2558891235619. The reversal of 2558891235578 is 8755321988552.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4237526 + ... + 4803582.

It is an arithmetic number, because the mean of its divisors is an integer number (245005752024).

Almost surely, 2^{2558891235578} is an apocalyptic number.

2558891235578 is a deficient number, since it is larger than the sum of its proper divisors (1361200796806).

2558891235578 is a wasteful number, since it uses less digits than its factorization.

2558891235578 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 614197.

The product of its digits is 241920000, while the sum is 68.

The spelling of 2558891235578 in words is "two trillion, five hundred fifty-eight billion, eight hundred ninety-one million, two hundred thirty-five thousand, five hundred seventy-eight".