27706610851 has 4 divisors (see below), whose sum is σ = 27783788400. Its totient is φ = 27629433304.

The previous prime is 27706610821. The next prime is 27706610857. The reversal of 27706610851 is 15801660772.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 27706610851 - 2¹³ = 27706602659 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 27706610798 and 27706610807.

It is not an unprimeable number, because it can be changed into a prime (27706610857) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38588236 + ... + 38588953.

It is an arithmetic number, because the mean of its divisors is an integer number (6945947100).

Almost surely, 2^27706610851 is an apocalyptic number.

27706610851 is a deficient number, since it is larger than the sum of its proper divisors (77177549).

27706610851 is an equidigital number, since it uses as much as digits as its factorization.

27706610851 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77177548.

The product of its (nonzero) digits is 141120, while the sum is 43.

The spelling of 27706610851 in words is "twenty-seven billion, seven hundred six million, six hundred ten thousand, eight hundred fifty-one".