1339963899557 has 2 divisors, whose sum is σ = 1339963899558. Its totient is φ = 1339963899556.

The previous prime is 1339963899511. The next prime is 1339963899601. The reversal of 1339963899557 is 7559983699331.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1327659322081 + 12304577476 = 1152241^2 + 110926^2 .

It is a cyclic number.

It is not a de Polignac number, because 1339963899557 - 2³⁶ = 1271244422821 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1339963899257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 669981949778 + 669981949779.

It is an arithmetic number, because the mean of its divisors is an integer number (669981949779).

Almost surely, 2^{1339963899557} is an apocalyptic number.

It is an amenable number.

1339963899557 is a deficient number, since it is larger than the sum of its proper divisors (1).

1339963899557 is an equidigital number, since it uses as much as digits as its factorization.

1339963899557 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1488034800, while the sum is 77.

The spelling of 1339963899557 in words is "one trillion, three hundred thirty-nine billion, nine hundred sixty-three million, eight hundred ninety-nine thousand, five hundred fifty-seven".