17164221947 has 2 divisors, whose sum is σ = 17164221948. Its totient is φ = 17164221946.

The previous prime is 17164221941. The next prime is 17164221961. The reversal of 17164221947 is 74912246171.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 17164221947 - 2⁴ = 17164221931 is a prime.

It is a super-2 number, since 2×17164221947² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 17164221898 and 17164221907.

It is not a weakly prime, because it can be changed into another prime (17164221941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8582110973 + 8582110974.

It is an arithmetic number, because the mean of its divisors is an integer number (8582110974).

Almost surely, 2^17164221947 is an apocalyptic number.

17164221947 is a deficient number, since it is larger than the sum of its proper divisors (1).

17164221947 is an equidigital number, since it uses as much as digits as its factorization.

17164221947 is an evil number, because the sum of its binary digits is even.

The product of its digits is 169344, while the sum is 44.

The spelling of 17164221947 in words is "seventeen billion, one hundred sixty-four million, two hundred twenty-one thousand, nine hundred forty-seven".