28531455855 has 16 divisors (see below), whose sum is σ = 52171805184. Its totient is φ = 13042951200.

The previous prime is 28531455839. The next prime is 28531455877. The reversal of 28531455855 is 55855413582.

It is not a de Polignac number, because 28531455855 - 2⁴ = 28531455839 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28531455798 and 28531455807.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 135863971 + ... + 135864180.

It is an arithmetic number, because the mean of its divisors is an integer number (3260737824).

Almost surely, 2^28531455855 is an apocalyptic number.

28531455855 is a deficient number, since it is larger than the sum of its proper divisors (23640349329).

28531455855 is a wasteful number, since it uses less digits than its factorization.

28531455855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 271728166.

The product of its digits is 4800000, while the sum is 51.

The spelling of 28531455855 in words is "twenty-eight billion, five hundred thirty-one million, four hundred fifty-five thousand, eight hundred fifty-five".