28243552558 has 16 divisors (see below), whose sum is σ = 47607862176. Its totient is φ = 12468725280.

The previous prime is 28243552541. The next prime is 28243552619. The reversal of 28243552558 is 85525534282.

It is a super-2 number, since 2×28243552558² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23614413 + ... + 23615608.

It is an arithmetic number, because the mean of its divisors is an integer number (2975491386).

Almost surely, 2^28243552558 is an apocalyptic number.

28243552558 is a deficient number, since it is larger than the sum of its proper divisors (19364309618).

28243552558 is a wasteful number, since it uses less digits than its factorization.

28243552558 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47230059.

The product of its digits is 3840000, while the sum is 49.

The spelling of 28243552558 in words is "twenty-eight billion, two hundred forty-three million, five hundred fifty-two thousand, five hundred fifty-eight".