27800500055 has 8 divisors (see below), whose sum is σ = 33379860672. Its totient is φ = 22227559648.

The previous prime is 27800500037. The next prime is 27800500073. The reversal of 27800500055 is 55000500872.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (27800500037) and next prime (27800500073).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 27800500055 - 2⁸ = 27800499799 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 27800499994 and 27800500030.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1595519 + ... + 1612848.

It is an arithmetic number, because the mean of its divisors is an integer number (4172482584).

Almost surely, 2^27800500055 is an apocalyptic number.

27800500055 is a deficient number, since it is larger than the sum of its proper divisors (5579360617).

27800500055 is a wasteful number, since it uses less digits than its factorization.

27800500055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3210105.

The product of its (nonzero) digits is 14000, while the sum is 32.

The spelling of 27800500055 in words is "twenty-seven billion, eight hundred million, five hundred thousand, fifty-five".