139494367863 has 8 divisors (see below), whose sum is σ = 206658322800. Its totient is φ = 92996245224.

The previous prime is 139494367849. The next prime is 139494367879. The reversal of 139494367863 is 368763494931.

139494367863 is a `hidden beast` number, since 1 + 3 + 9 + 494 + 3 + 67 + 86 + 3 = 666.

It is not a de Polignac number, because 139494367863 - 2¹⁸ = 139494105719 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 139494367863.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139494367843) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2583229008 + ... + 2583229061.

It is an arithmetic number, because the mean of its divisors is an integer number (25832290350).

Almost surely, 2^139494367863 is an apocalyptic number.

139494367863 is a deficient number, since it is larger than the sum of its proper divisors (67163954937).

139494367863 is an equidigital number, since it uses as much as digits as its factorization.

139494367863 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5166458078 (or 5166458072 counting only the distinct ones).

The product of its digits is 70543872, while the sum is 63.

The spelling of 139494367863 in words is "one hundred thirty-nine billion, four hundred ninety-four million, three hundred sixty-seven thousand, eight hundred sixty-three".