27806215107 has 32 divisors (see below), whose sum is σ = 40912784640. Its totient is φ = 16658565120.

The previous prime is 27806215097. The next prime is 27806215109. The reversal of 27806215107 is 70151260872.

It is not a de Polignac number, because 27806215107 - 2¹⁴ = 27806198723 is a prime.

It is not an unprimeable number, because it can be changed into a prime (27806215109) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1055763 + ... + 1081779.

It is an arithmetic number, because the mean of its divisors is an integer number (1278524520).

Almost surely, 2^27806215107 is an apocalyptic number.

27806215107 is a deficient number, since it is larger than the sum of its proper divisors (13106569533).

27806215107 is a wasteful number, since it uses less digits than its factorization.

27806215107 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26403.

The product of its (nonzero) digits is 47040, while the sum is 39.

Adding to 27806215107 its reverse (70151260872), we get a palindrome (97957475979).

The spelling of 27806215107 in words is "twenty-seven billion, eight hundred six million, two hundred fifteen thousand, one hundred seven".