1313329252537 has 2 divisors, whose sum is σ = 1313329252538. Its totient is φ = 1313329252536.

The previous prime is 1313329252531. The next prime is 1313329252577. The reversal of 1313329252537 is 7352529233131.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1305418217401 + 7911035136 = 1142549^2 + 88944^2 .

It is a cyclic number.

It is not a de Polignac number, because 1313329252537 - 2³⁵ = 1278969514169 is a prime.

It is not a weakly prime, because it can be changed into another prime (1313329252531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 656664626268 + 656664626269.

It is an arithmetic number, because the mean of its divisors is an integer number (656664626269).

Almost surely, 2^{1313329252537} is an apocalyptic number.

It is an amenable number.

1313329252537 is a deficient number, since it is larger than the sum of its proper divisors (1).

1313329252537 is an equidigital number, since it uses as much as digits as its factorization.

1313329252537 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1020600, while the sum is 46.

The spelling of 1313329252537 in words is "one trillion, three hundred thirteen billion, three hundred twenty-nine million, two hundred fifty-two thousand, five hundred thirty-seven".