1721414106505 has 8 divisors (see below), whose sum is σ = 2066223511872. Its totient is φ = 1376780229168.

The previous prime is 1721414106413. The next prime is 1721414106611. The reversal of 1721414106505 is 5056014141271.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1721414106505 - 2²¹ = 1721412009353 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 43860429 + ... + 43899658.

It is an arithmetic number, because the mean of its divisors is an integer number (258277938984).

Almost surely, 2^{1721414106505} is an apocalyptic number.

It is an amenable number.

1721414106505 is a deficient number, since it is larger than the sum of its proper divisors (344809405367).

1721414106505 is an equidigital number, since it uses as much as digits as its factorization.

1721414106505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87764015.

The product of its (nonzero) digits is 33600, while the sum is 37.

Adding to 1721414106505 its reverse (5056014141271), we get a palindrome (6777428247776).

The spelling of 1721414106505 in words is "one trillion, seven hundred twenty-one billion, four hundred fourteen million, one hundred six thousand, five hundred five".