1339731394561 has 8 divisors (see below), whose sum is σ = 1552095862784. Its totient is φ = 1132610493600.

The previous prime is 1339731394553. The next prime is 1339731394571. The reversal of 1339731394561 is 1654931379331.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1339731394561 - 2³ = 1339731394553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1339731394571) 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 in 7 ways as a sum of consecutive naturals, for example, 1310891265 + ... + 1310892286.

It is an arithmetic number, because the mean of its divisors is an integer number (194011982848).

Almost surely, 2^{1339731394561} is an apocalyptic number.

It is an amenable number.

1339731394561 is a deficient number, since it is larger than the sum of its proper divisors (212364468223).

1339731394561 is an equidigital number, since it uses as much as digits as its factorization.

1339731394561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2621783631.

The product of its digits is 5511240, while the sum is 55.

The spelling of 1339731394561 in words is "one trillion, three hundred thirty-nine billion, seven hundred thirty-one million, three hundred ninety-four thousand, five hundred sixty-one".