10001111999969 has 2 divisors, whose sum is σ = 10001111999970. Its totient is φ = 10001111999968.

The previous prime is 10001111999947. The next prime is 10001112000017. The reversal of 10001111999969 is 96999911110001.

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., 6387310999969 + 3613801000000 = 2527313^2 + 1901000^2 .

It is an emirp because it is prime and its reverse (96999911110001) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10001111999969 is a prime.

It is a super-2 number, since 2×10001111999969² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (10001111993969) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5000555999984 + 5000555999985.

It is an arithmetic number, because the mean of its divisors is an integer number (5000555999985).

Almost surely, 2^{10001111999969} is an apocalyptic number.

It is an amenable number.

10001111999969 is a deficient number, since it is larger than the sum of its proper divisors (1).

10001111999969 is an equidigital number, since it uses as much as digits as its factorization.

10001111999969 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 354294, while the sum is 56.

The spelling of 10001111999969 in words is "ten trillion, one billion, one hundred eleven million, nine hundred ninety-nine thousand, nine hundred sixty-nine".