27690638229 has 24 divisors (see below), whose sum is σ = 40823577600. Its totient is φ = 18081735840.

The previous prime is 27690638161. The next prime is 27690638257. The reversal of 27690638229 is 92283609672.

It is a happy number.

27690638229 is a `hidden beast` number, since 276 + 90 + 63 + 8 + 229 = 666.

It is not a de Polignac number, because 27690638229 - 2¹⁷ = 27690507157 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27690636229) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 25692 + ... + 236730.

It is an arithmetic number, because the mean of its divisors is an integer number (1700982400).

Almost surely, 2^27690638229 is an apocalyptic number.

It is an amenable number.

27690638229 is a deficient number, since it is larger than the sum of its proper divisors (13132939371).

27690638229 is a wasteful number, since it uses less digits than its factorization.

27690638229 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211345 (or 211342 counting only the distinct ones).

The product of its (nonzero) digits is 3919104, while the sum is 54.

The spelling of 27690638229 in words is "twenty-seven billion, six hundred ninety million, six hundred thirty-eight thousand, two hundred twenty-nine".