27960966139 has 2 divisors, whose sum is σ = 27960966140. Its totient is φ = 27960966138.

The previous prime is 27960966113. The next prime is 27960966167. The reversal of 27960966139 is 93166906972.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 27960966139 - 2³¹ = 25813482491 is a prime.

It is not a weakly prime, because it can be changed into another prime (27960996139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13980483069 + 13980483070.

It is an arithmetic number, because the mean of its divisors is an integer number (13980483070).

Almost surely, 2^27960966139 is an apocalyptic number.

27960966139 is a deficient number, since it is larger than the sum of its proper divisors (1).

27960966139 is an equidigital number, since it uses as much as digits as its factorization.

27960966139 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6613488, while the sum is 58.

The spelling of 27960966139 in words is "twenty-seven billion, nine hundred sixty million, nine hundred sixty-six thousand, one hundred thirty-nine".