28542863855 has 16 divisors (see below), whose sum is σ = 37877061024. Its totient is φ = 20474081280.

The previous prime is 28542863821. The next prime is 28542863887. The reversal of 28542863855 is 55836824582.

It is not a de Polignac number, because 28542863855 - 2¹² = 28542859759 is a prime.

It is a super-2 number, since 2×28542863855² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 28542863855.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3550514 + ... + 3558543.

It is an arithmetic number, because the mean of its divisors is an integer number (2367316314).

Almost surely, 2^28542863855 is an apocalyptic number.

28542863855 is a deficient number, since it is larger than the sum of its proper divisors (9334197169).

28542863855 is a wasteful number, since it uses less digits than its factorization.

28542863855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7109146.

The product of its digits is 18432000, while the sum is 56.

The spelling of 28542863855 in words is "twenty-eight billion, five hundred forty-two million, eight hundred sixty-three thousand, eight hundred fifty-five".