28086138550206 has 96 divisors (see below), whose sum is σ = 68812202160000. Its totient is φ = 8201001291840.

The previous prime is 28086138550193. The next prime is 28086138550213. The reversal of 28086138550206 is 60205583168082.

28086138550206 is a `hidden beast` number, since 2 + 8 + 0 + 8 + 6 + 1 + 385 + 50 + 206 = 666.

It is a super-2 number, since 2×28086138550206² (a number of 28 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 47 ways as a sum of consecutive naturals, for example, 2035896 + ... + 7766411.

It is an arithmetic number, because the mean of its divisors is an integer number (716793772500).

Almost surely, 2^{28086138550206} is an apocalyptic number.

28086138550206 is an abundant number, since it is smaller than the sum of its proper divisors (40726063609794).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28086138550206 is a wasteful number, since it uses less digits than its factorization.

28086138550206 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9802854 (or 9802851 counting only the distinct ones).

The product of its (nonzero) digits is 5529600, while the sum is 54.

The spelling of 28086138550206 in words is "twenty-eight trillion, eighty-six billion, one hundred thirty-eight million, five hundred fifty thousand, two hundred six".