1002345023509 has 2 divisors, whose sum is σ = 1002345023510. Its totient is φ = 1002345023508.

The previous prime is 1002345023501. The next prime is 1002345023513. The reversal of 1002345023509 is 9053205432001.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 824073606225 + 178271417284 = 907785^2 + 422222^2 .

It is a cyclic number.

It is not a de Polignac number, because 1002345023509 - 2³ = 1002345023501 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1002345023501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 501172511754 + 501172511755.

It is an arithmetic number, because the mean of its divisors is an integer number (501172511755).

Almost surely, 2^{1002345023509} is an apocalyptic number.

It is an amenable number.

1002345023509 is a deficient number, since it is larger than the sum of its proper divisors (1).

1002345023509 is an equidigital number, since it uses as much as digits as its factorization.

1002345023509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32400, while the sum is 34.

The spelling of 1002345023509 in words is "one trillion, two billion, three hundred forty-five million, twenty-three thousand, five hundred nine".