27720002206 has 16 divisors (see below), whose sum is σ = 44791344864. Its totient is φ = 12790167264.

The previous prime is 27720002203. The next prime is 27720002209. The reversal of 27720002206 is 60220002772.

It is an interprime number because it is at equal distance from previous prime (27720002203) and next prime (27720002209).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27720002203) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 60130 + ... + 243013.

It is an arithmetic number, because the mean of its divisors is an integer number (2799459054).

Almost surely, 2^27720002206 is an apocalyptic number.

27720002206 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

27720002206 is a deficient number, since it is larger than the sum of its proper divisors (17071342658).

27720002206 is a wasteful number, since it uses less digits than its factorization.

27720002206 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 306675.

The product of its (nonzero) digits is 4704, while the sum is 28.

Adding to 27720002206 its reverse (60220002772), we get a palindrome (87940004978).

The spelling of 27720002206 in words is "twenty-seven billion, seven hundred twenty million, two thousand, two hundred six".