27666550260 has 36 divisors (see below), whose sum is σ = 83921869668. Its totient is φ = 7377746688.

The previous prime is 27666550229. The next prime is 27666550277. The reversal of 27666550260 is 6205566672.

It can be written as a sum of positive squares in 2 ways, for example, as 2771390736 + 24895159524 = 52644^2 + 157782^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 76851349 + ... + 76851708.

Almost surely, 2^27666550260 is an apocalyptic number.

27666550260 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

27666550260 is an abundant number, since it is smaller than the sum of its proper divisors (56255319408).

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

27666550260 is a wasteful number, since it uses less digits than its factorization.

27666550260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153703072 (or 153703067 counting only the distinct ones).

The product of its (nonzero) digits is 907200, while the sum is 45.

The spelling of 27666550260 in words is "twenty-seven billion, six hundred sixty-six million, five hundred fifty thousand, two hundred sixty".