28031055855 has 16 divisors (see below), whose sum is σ = 48926934144. Its totient is φ = 13590814880.

The previous prime is 28031055853. The next prime is 28031055859. The reversal of 28031055855 is 55855013082.

It is not a de Polignac number, because 28031055855 - 2¹ = 28031055853 is a prime.

It is a super-2 number, since 2×28031055855² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28031055853) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 84942429 + ... + 84942758.

It is an arithmetic number, because the mean of its divisors is an integer number (3057933384).

Almost surely, 2^28031055855 is an apocalyptic number.

28031055855 is a deficient number, since it is larger than the sum of its proper divisors (20895878289).

28031055855 is a wasteful number, since it uses less digits than its factorization.

28031055855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169885206.

The product of its (nonzero) digits is 240000, while the sum is 42.

The spelling of 28031055855 in words is "twenty-eight billion, thirty-one million, fifty-five thousand, eight hundred fifty-five".