27687806306 has 4 divisors (see below), whose sum is σ = 41531709462. Its totient is φ = 13843903152.

The previous prime is 27687806299. The next prime is 27687806351. The reversal of 27687806306 is 60360878672.

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

It can be written as a sum of positive squares in only one way, i.e., 19795083025 + 7892723281 = 140695^2 + 88841^2 .

It is a super-2 number, since 2×27687806306² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6921951575 + ... + 6921951578.

Almost surely, 2^27687806306 is an apocalyptic number.

27687806306 is a deficient number, since it is larger than the sum of its proper divisors (13843903156).

27687806306 is a wasteful number, since it uses less digits than its factorization.

27687806306 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13843903155.

The product of its (nonzero) digits is 4064256, while the sum is 53.

The spelling of 27687806306 in words is "twenty-seven billion, six hundred eighty-seven million, eight hundred six thousand, three hundred six".