1339408387856 has 80 divisors (see below), whose sum is σ = 3283744588800. Its totient is φ = 514058624640.

The previous prime is 1339408387843. The next prime is 1339408387927. The reversal of 1339408387856 is 6587838049331.

It is a junction number, because it is equal to n+sod(n) for n = 1339408387792 and 1339408387801.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8030756 + ... + 8195843.

It is an arithmetic number, because the mean of its divisors is an integer number (41046807360).

Almost surely, 2^{1339408387856} is an apocalyptic number.

1339408387856 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1339408387856 is an abundant number, since it is smaller than the sum of its proper divisors (1944336200944).

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

1339408387856 is a wasteful number, since it uses less digits than its factorization.

1339408387856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16226692 (or 16226686 counting only the distinct ones).

The product of its (nonzero) digits is 104509440, while the sum is 65.

The spelling of 1339408387856 in words is "one trillion, three hundred thirty-nine billion, four hundred eight million, three hundred eighty-seven thousand, eight hundred fifty-six".