1339731394571 has 2 divisors, whose sum is σ = 1339731394572. Its totient is φ = 1339731394570.

The previous prime is 1339731394553. The next prime is 1339731394637. The reversal of 1339731394571 is 1754931379331.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1339731394571 is a prime.

It is not a weakly prime, because it can be changed into another prime (1339731394171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 669865697285 + 669865697286.

It is an arithmetic number, because the mean of its divisors is an integer number (669865697286).

Almost surely, 2^{1339731394571} is an apocalyptic number.

1339731394571 is a deficient number, since it is larger than the sum of its proper divisors (1).

1339731394571 is an equidigital number, since it uses as much as digits as its factorization.

1339731394571 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6429780, while the sum is 56.

The spelling of 1339731394571 in words is "one trillion, three hundred thirty-nine billion, seven hundred thirty-one million, three hundred ninety-four thousand, five hundred seventy-one".