1001309999969 has 2 divisors, whose sum is σ = 1001309999970. Its totient is φ = 1001309999968.

The previous prime is 1001309999959. The next prime is 1001310000049. The reversal of 1001309999969 is 9699999031001.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 660034380625 + 341275619344 = 812425^2 + 584188^2 .

It is a cyclic number.

It is not a de Polignac number, because 1001309999969 - 2²⁰ = 1001308951393 is a prime.

It is a super-2 number, since 2×1001309999969² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1001309999939) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 500654999984 + 500654999985.

It is an arithmetic number, because the mean of its divisors is an integer number (500654999985).

Almost surely, 2^{1001309999969} is an apocalyptic number.

It is an amenable number.

1001309999969 is a deficient number, since it is larger than the sum of its proper divisors (1).

1001309999969 is an equidigital number, since it uses as much as digits as its factorization.

1001309999969 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9565938, while the sum is 65.

The spelling of 1001309999969 in words is "one trillion, one billion, three hundred nine million, nine hundred ninety-nine thousand, nine hundred sixty-nine".