17809379053456 has 45 divisors (see below), whose sum is σ = 34847332993179. Its totient is φ = 8817375326688.

The previous prime is 17809379053423. The next prime is 17809379053457. The reversal of 17809379053456 is 65435097390871.

The square root of 17809379053456 is 4220116.

It is a perfect power (a square), and thus also a powerful number.

It is a junction number, because it is equal to n+sod(n) for n = 17809379053391 and 17809379053400.

It is not an unprimeable number, because it can be changed into a prime (17809379053457) 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 in 8 ways as a sum of consecutive naturals, for example, 1738682671 + ... + 1738692913.

Almost surely, 2^{17809379053456} is an apocalyptic number.

17809379053456 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

17809379053456 is the 4220116-th square number.

It is an amenable number.

17809379053456 is a deficient number, since it is larger than the sum of its proper divisors (17037953939723).

17809379053456 is an frugal number, since it uses more digits than its factorization.

17809379053456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20700 (or 10348 counting only the distinct ones).

The product of its (nonzero) digits is 171460800, while the sum is 67.

The spelling of 17809379053456 in words is "seventeen trillion, eight hundred nine billion, three hundred seventy-nine million, fifty-three thousand, four hundred fifty-six".