27870966916 has 27 divisors (see below), whose sum is σ = 52822884303. Its totient is φ = 12861519840.

The previous prime is 27870966853. The next prime is 27870966923. The reversal of 27870966916 is 61966907872.

The square root of 27870966916 is 166946.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 9457562500 + 18413404416 = 97250^2 + 135696^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 4337386 + ... + 4343806.

Almost surely, 2^27870966916 is an apocalyptic number.

27870966916 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

27870966916 is the 166946-th square number.

It is an amenable number.

27870966916 is a deficient number, since it is larger than the sum of its proper divisors (24951917387).

27870966916 is an frugal number, since it uses more digits than its factorization.

27870966916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12872 (or 6436 counting only the distinct ones).

The product of its (nonzero) digits is 13716864, while the sum is 61.

The spelling of 27870966916 in words is "twenty-seven billion, eight hundred seventy million, nine hundred sixty-six thousand, nine hundred sixteen".