21659147014 has 16 divisors (see below), whose sum is σ = 34207387200. Its totient is φ = 10256975784.

The previous prime is 21659146961. The next prime is 21659147063. The reversal of 21659147014 is 41074195612.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

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, 82257 + ... + 223795.

It is an arithmetic number, because the mean of its divisors is an integer number (2137961700).

Almost surely, 2^21659147014 is an apocalyptic number.

21659147014 is a deficient number, since it is larger than the sum of its proper divisors (12548240186).

21659147014 is a wasteful number, since it uses less digits than its factorization.

21659147014 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145587.

The product of its (nonzero) digits is 60480, while the sum is 40.

The spelling of 21659147014 in words is "twenty-one billion, six hundred fifty-nine million, one hundred forty-seven thousand, fourteen".