17115621043 has 2 divisors, whose sum is σ = 17115621044. Its totient is φ = 17115621042.

The previous prime is 17115621023. The next prime is 17115621071. The reversal of 17115621043 is 34012651171.

It is a weak prime.

It is an emirp because it is prime and its reverse (34012651171) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 17115621043 - 2⁹ = 17115620531 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 17115620996 and 17115621014.

It is not a weakly prime, because it can be changed into another prime (17115621013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8557810521 + 8557810522.

It is an arithmetic number, because the mean of its divisors is an integer number (8557810522).

Almost surely, 2^17115621043 is an apocalyptic number.

17115621043 is a deficient number, since it is larger than the sum of its proper divisors (1).

17115621043 is an equidigital number, since it uses as much as digits as its factorization.

17115621043 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5040, while the sum is 31.

The spelling of 17115621043 in words is "seventeen billion, one hundred fifteen million, six hundred twenty-one thousand, forty-three".