21714162764647 has 16 divisors (see below), whose sum is σ = 22301390022912. Its totient is φ = 21129719673280.

The previous prime is 21714162764621. The next prime is 21714162764659. The reversal of 21714162764647 is 74646726141712.

It is a cyclic number.

It is not a de Polignac number, because 21714162764647 - 2¹¹ = 21714162762599 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21714162764591 and 21714162764600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21714162761647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42693918 + ... + 43199524.

It is an arithmetic number, because the mean of its divisors is an integer number (1393836876432).

Almost surely, 2^{21714162764647} is an apocalyptic number.

21714162764647 is a deficient number, since it is larger than the sum of its proper divisors (587227258265).

21714162764647 is a wasteful number, since it uses less digits than its factorization.

21714162764647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 508358.

The product of its digits is 18966528, while the sum is 58.

The spelling of 21714162764647 in words is "twenty-one trillion, seven hundred fourteen billion, one hundred sixty-two million, seven hundred sixty-four thousand, six hundred forty-seven".