139463216639 has 2 divisors, whose sum is σ = 139463216640. Its totient is φ = 139463216638.

The previous prime is 139463216603. The next prime is 139463216657. The reversal of 139463216639 is 936612364931.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (936612364931) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 139463216639 - 2¹⁶ = 139463151103 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (139463216939) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69731608319 + 69731608320.

It is an arithmetic number, because the mean of its divisors is an integer number (69731608320).

Almost surely, 2^139463216639 is an apocalyptic number.

139463216639 is a deficient number, since it is larger than the sum of its proper divisors (1).

139463216639 is an equidigital number, since it uses as much as digits as its factorization.

139463216639 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3779136, while the sum is 53.

The spelling of 139463216639 in words is "one hundred thirty-nine billion, four hundred sixty-three million, two hundred sixteen thousand, six hundred thirty-nine".