2145315404513 has 2 divisors, whose sum is σ = 2145315404514. Its totient is φ = 2145315404512.

The previous prime is 2145315404471. The next prime is 2145315404581. The reversal of 2145315404513 is 3154045135412.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1572837040384 + 572478364129 = 1254128^2 + 756623^2 .

It is a cyclic number.

It is not a de Polignac number, because 2145315404513 - 2⁸ = 2145315404257 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (2145315404593) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1072657702256 + 1072657702257.

It is an arithmetic number, because the mean of its divisors is an integer number (1072657702257).

Almost surely, 2^{2145315404513} is an apocalyptic number.

It is an amenable number.

2145315404513 is a deficient number, since it is larger than the sum of its proper divisors (1).

2145315404513 is an equidigital number, since it uses as much as digits as its factorization.

2145315404513 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144000, while the sum is 38.

The spelling of 2145315404513 in words is "two trillion, one hundred forty-five billion, three hundred fifteen million, four hundred four thousand, five hundred thirteen".