27770020011 has 12 divisors (see below), whose sum is σ = 40133714400. Its totient is φ = 18503440560.

The previous prime is 27770019929. The next prime is 27770020043. The reversal of 27770020011 is 11002007772.

It is a de Polignac number, because none of the positive numbers 2^k-27770020011 is a prime.

It is a super-2 number, since 2×27770020011² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (27770024011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 807736 + ... + 841413.

It is an arithmetic number, because the mean of its divisors is an integer number (3344476200).

Almost surely, 2^27770020011 is an apocalyptic number.

27770020011 is a deficient number, since it is larger than the sum of its proper divisors (12363694389).

27770020011 is a wasteful number, since it uses less digits than its factorization.

27770020011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1651026 (or 1651023 counting only the distinct ones).

The product of its (nonzero) digits is 1372, while the sum is 27.

Adding to 27770020011 its reverse (11002007772), we get a palindrome (38772027783).

The spelling of 27770020011 in words is "twenty-seven billion, seven hundred seventy million, twenty thousand, eleven".