1345528127861 has 2 divisors, whose sum is σ = 1345528127862. Its totient is φ = 1345528127860.

The previous prime is 1345528127809. The next prime is 1345528127869. The reversal of 1345528127861 is 1687218255431.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1094095080100 + 251433047761 = 1045990^2 + 501431^2 .

It is a cyclic number.

It is not a de Polignac number, because 1345528127861 - 2²² = 1345523933557 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1345528127869) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 672764063930 + 672764063931.

It is an arithmetic number, because the mean of its divisors is an integer number (672764063931).

Almost surely, 2^{1345528127861} is an apocalyptic number.

It is an amenable number.

1345528127861 is a deficient number, since it is larger than the sum of its proper divisors (1).

1345528127861 is an equidigital number, since it uses as much as digits as its factorization.

1345528127861 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3225600, while the sum is 53.

The spelling of 1345528127861 in words is "one trillion, three hundred forty-five billion, five hundred twenty-eight million, one hundred twenty-seven thousand, eight hundred sixty-one".