27812216770 has 48 divisors (see below), whose sum is σ = 54343028520. Its totient is φ = 10243763712.

The previous prime is 27812216759. The next prime is 27812216779. The reversal of 27812216770 is 7761221872.

It can be written as a sum of positive squares in 12 ways, for example, as 2597635089 + 25214581681 = 50967^2 + 158791^2 .

It is a super-2 number, since 2×27812216770² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (27812216779) 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, 671092 + ... + 711328.

Almost surely, 2^27812216770 is an apocalyptic number.

27812216770 is a deficient number, since it is larger than the sum of its proper divisors (26530811750).

27812216770 is a wasteful number, since it uses less digits than its factorization.

27812216770 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40679 (or 40666 counting only the distinct ones).

The product of its (nonzero) digits is 131712, while the sum is 43.

The spelling of 27812216770 in words is "twenty-seven billion, eight hundred twelve million, two hundred sixteen thousand, seven hundred seventy".