14210555156721 has 81 divisors (see below), whose sum is σ = 26247234260793. Its totient is φ = 7381654212240.

The previous prime is 14210555156639. The next prime is 14210555156737. The reversal of 14210555156721 is 12765155501241.

The square root of 14210555156721 is 3769689.

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

14210555156721 is a `hidden beast` number, since 1 + 4 + 2 + 1 + 0 + 55 + 515 + 67 + 21 = 666.

It is not a de Polignac number, because 14210555156721 - 2⁷ = 14210555156593 is a prime.

It is a super-3 number, since 3×14210555156721³ (a number of 40 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (14210555156741) by changing a digit.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 870790000 + ... + 870806318.

Almost surely, 2^{14210555156721} is an apocalyptic number.

14210555156721 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

14210555156721 is the 3769689-th square number.

14210555156721 is the 1884845-th centered octagonal number.

It is an amenable number.

14210555156721 is a deficient number, since it is larger than the sum of its proper divisors (12036679104072).

14210555156721 is an frugal number, since it uses more digits than its factorization.

14210555156721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32680 (or 16340 counting only the distinct ones).

The product of its (nonzero) digits is 420000, while the sum is 45.

The spelling of 14210555156721 in words is "fourteen trillion, two hundred ten billion, five hundred fifty-five million, one hundred fifty-six thousand, seven hundred twenty-one".