21714353726663 has 4 divisors (see below), whose sum is σ = 23384688628728. Its totient is φ = 20044018824600.

The previous prime is 21714353726623. The next prime is 21714353726677. The reversal of 21714353726663 is 36662735341712.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 21714353726663 - 2²⁶ = 21714286617799 is a prime.

It is a super-2 number, since 2×21714353726663² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21714353726599 and 21714353726608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21714353726623) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 835167451013 + ... + 835167451038.

It is an arithmetic number, because the mean of its divisors is an integer number (5846172157182).

Almost surely, 2^{21714353726663} is an apocalyptic number.

21714353726663 is a deficient number, since it is larger than the sum of its proper divisors (1670334902065).

21714353726663 is a wasteful number, since it uses less digits than its factorization.

21714353726663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1670334902064.

The product of its digits is 22861440, while the sum is 56.

The spelling of 21714353726663 in words is "twenty-one trillion, seven hundred fourteen billion, three hundred fifty-three million, seven hundred twenty-six thousand, six hundred sixty-three".