1720455426206 has 32 divisors (see below), whose sum is σ = 2838914873856. Its totient is φ = 781926756600.

The previous prime is 1720455426187. The next prime is 1720455426253. The reversal of 1720455426206 is 6026245540271.

It is a super-2 number, since 2×1720455426206² (a number of 25 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23716811 + ... + 23789241.

It is an arithmetic number, because the mean of its divisors is an integer number (88716089808).

Almost surely, 2^{1720455426206} is an apocalyptic number.

1720455426206 is a deficient number, since it is larger than the sum of its proper divisors (1118459447650).

1720455426206 is an equidigital number, since it uses as much as digits as its factorization.

1720455426206 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81389 (or 81367 counting only the distinct ones).

The product of its (nonzero) digits is 806400, while the sum is 44.

The spelling of 1720455426206 in words is "one trillion, seven hundred twenty billion, four hundred fifty-five million, four hundred twenty-six thousand, two hundred six".