17997744967 has 2 divisors, whose sum is σ = 17997744968. Its totient is φ = 17997744966.

The previous prime is 17997744907. The next prime is 17997744991. The reversal of 17997744967 is 76944779971.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 17997744967 - 2¹⁵ = 17997712199 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 17997744896 and 17997744905.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (17997744907) 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, 8998872483 + 8998872484.

It is an arithmetic number, because the mean of its divisors is an integer number (8998872484).

Almost surely, 2^17997744967 is an apocalyptic number.

17997744967 is a deficient number, since it is larger than the sum of its proper divisors (1).

17997744967 is an equidigital number, since it uses as much as digits as its factorization.

17997744967 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 168031584, while the sum is 70.

The spelling of 17997744967 in words is "seventeen billion, nine hundred ninety-seven million, seven hundred forty-four thousand, nine hundred sixty-seven".