139007666191 has 2 divisors, whose sum is σ = 139007666192. Its totient is φ = 139007666190.

The previous prime is 139007666173. The next prime is 139007666219. The reversal of 139007666191 is 191666700931.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 139007666191 - 2¹¹ = 139007664143 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (139007666111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69503833095 + 69503833096.

It is an arithmetic number, because the mean of its divisors is an integer number (69503833096).

Almost surely, 2^139007666191 is an apocalyptic number.

139007666191 is a deficient number, since it is larger than the sum of its proper divisors (1).

139007666191 is an equidigital number, since it uses as much as digits as its factorization.

139007666191 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 367416, while the sum is 49.

The spelling of 139007666191 in words is "one hundred thirty-nine billion, seven million, six hundred sixty-six thousand, one hundred ninety-one".