21714643007 has 8 divisors (see below), whose sum is σ = 22351282176. Its totient is φ = 21085279992.

The previous prime is 21714642959. The next prime is 21714643009. The reversal of 21714643007 is 70034641712.

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 21714643007 - 2³⁴ = 4534773823 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21714643009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1812983 + ... + 1824920.

It is an arithmetic number, because the mean of its divisors is an integer number (2793910272).

Almost surely, 2^21714643007 is an apocalyptic number.

21714643007 is a deficient number, since it is larger than the sum of its proper divisors (636639169).

21714643007 is a wasteful number, since it uses less digits than its factorization.

21714643007 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3638077.

The product of its (nonzero) digits is 28224, while the sum is 35.

The spelling of 21714643007 in words is "twenty-one billion, seven hundred fourteen million, six hundred forty-three thousand, seven".