10009944001091 has 2 divisors, whose sum is σ = 10009944001092. Its totient is φ = 10009944001090.

The previous prime is 10009944001081. The next prime is 10009944001153. The reversal of 10009944001091 is 19010044990001.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 10009944001091 - 2⁴² = 5611897489987 is a prime.

It is not a weakly prime, because it can be changed into another prime (10009944001021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5004972000545 + 5004972000546.

It is an arithmetic number, because the mean of its divisors is an integer number (5004972000546).

Almost surely, 2^{10009944001091} is an apocalyptic number.

10009944001091 is a deficient number, since it is larger than the sum of its proper divisors (1).

10009944001091 is an equidigital number, since it uses as much as digits as its factorization.

10009944001091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11664, while the sum is 38.

Adding to 10009944001091 its reverse (19010044990001), we get a palindrome (29019988991092).

The spelling of 10009944001091 in words is "ten trillion, nine billion, nine hundred forty-four million, one thousand, ninety-one".