139088005891 has 2 divisors, whose sum is σ = 139088005892. Its totient is φ = 139088005890.

The previous prime is 139088005883. The next prime is 139088005921. The reversal of 139088005891 is 198500880931.

It is a weak prime.

It is an emirp because it is prime and its reverse (198500880931) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 139088005891 - 2³ = 139088005883 is a prime.

It is not a weakly prime, because it can be changed into another prime (139088005871) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69544002945 + 69544002946.

It is an arithmetic number, because the mean of its divisors is an integer number (69544002946).

Almost surely, 2^139088005891 is an apocalyptic number.

139088005891 is a deficient number, since it is larger than the sum of its proper divisors (1).

139088005891 is an equidigital number, since it uses as much as digits as its factorization.

139088005891 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 622080, while the sum is 52.

The spelling of 139088005891 in words is "one hundred thirty-nine billion, eighty-eight million, five thousand, eight hundred ninety-one".