27773272987 has 2 divisors, whose sum is σ = 27773272988. Its totient is φ = 27773272986.

The previous prime is 27773272979. The next prime is 27773273027. The reversal of 27773272987 is 78927237772.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 27773272987 - 2³ = 27773272979 is a prime.

It is a super-3 number, since 3×27773272987³ (a number of 32 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (27773272907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13886636493 + 13886636494.

It is an arithmetic number, because the mean of its divisors is an integer number (13886636494).

Almost surely, 2^27773272987 is an apocalyptic number.

27773272987 is a deficient number, since it is larger than the sum of its proper divisors (1).

27773272987 is an equidigital number, since it uses as much as digits as its factorization.

27773272987 is an evil number, because the sum of its binary digits is even.

The product of its digits is 29042496, while the sum is 61.

The spelling of 27773272987 in words is "twenty-seven billion, seven hundred seventy-three million, two hundred seventy-two thousand, nine hundred eighty-seven".