1345689135797 has 2 divisors, whose sum is σ = 1345689135798. Its totient is φ = 1345689135796.

The previous prime is 1345689135757. The next prime is 1345689135839. The reversal of 1345689135797 is 7975319865431.

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., 948235803076 + 397453332721 = 973774^2 + 630439^2 .

It is an emirp because it is prime and its reverse (7975319865431) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1345689135797 - 2⁸ = 1345689135541 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1345689135737) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 672844567898 + 672844567899.

It is an arithmetic number, because the mean of its divisors is an integer number (672844567899).

Almost surely, 2^{1345689135797} is an apocalyptic number.

It is an amenable number.

1345689135797 is a deficient number, since it is larger than the sum of its proper divisors (1).

1345689135797 is an equidigital number, since it uses as much as digits as its factorization.

1345689135797 is an evil number, because the sum of its binary digits is even.

The product of its digits is 171460800, while the sum is 68.

The spelling of 1345689135797 in words is "one trillion, three hundred forty-five billion, six hundred eighty-nine million, one hundred thirty-five thousand, seven hundred ninety-seven".