139719954791 has 2 divisors, whose sum is σ = 139719954792. Its totient is φ = 139719954790.

The previous prime is 139719954779. The next prime is 139719954823. The reversal of 139719954791 is 197459917931.

139719954791 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 139719954791 - 2⁶ = 139719954727 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (139719950791) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69859977395 + 69859977396.

It is an arithmetic number, because the mean of its divisors is an integer number (69859977396).

Almost surely, 2^139719954791 is an apocalyptic number.

139719954791 is a deficient number, since it is larger than the sum of its proper divisors (1).

139719954791 is an equidigital number, since it uses as much as digits as its factorization.

139719954791 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 19289340, while the sum is 65.

The spelling of 139719954791 in words is "one hundred thirty-nine billion, seven hundred nineteen million, nine hundred fifty-four thousand, seven hundred ninety-one".