6439312139346 has 32 divisors (see below), whose sum is σ = 14412529185600. Its totient is φ = 2130995381760.

The previous prime is 6439312139317. The next prime is 6439312139347.

6439312139346 is a `hidden beast` number, since 6 + 4 + 3 + 93 + 121 + 393 + 46 = 666.

6439312139346 is nontrivially palindromic in base 10.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 6439312139292 and 6439312139301.

It is not an unprimeable number, because it can be changed into a prime (6439312139347) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 428936815 + ... + 428951826.

It is an arithmetic number, because the mean of its divisors is an integer number (450391537050).

Almost surely, 2^{6439312139346} is an apocalyptic number.

6439312139346 is an abundant number, since it is smaller than the sum of its proper divisors (7973217046254).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6439312139346 is a wasteful number, since it uses less digits than its factorization.

6439312139346 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 857888791 (or 857888785 counting only the distinct ones).

The product of its digits is 7558272, while the sum is 54.

The spelling of 6439312139346 in words is "six trillion, four hundred thirty-nine billion, three hundred twelve million, one hundred thirty-nine thousand, three hundred forty-six".