21440301514 has 8 divisors (see below), whose sum is σ = 32161249440. Its totient is φ = 10719885036.

The previous prime is 21440301497. The next prime is 21440301557. The reversal of 21440301514 is 41510304412.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×21440301514² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8854 + ... + 207265.

It is an arithmetic number, because the mean of its divisors is an integer number (4020156180).

Almost surely, 2^21440301514 is an apocalyptic number.

21440301514 is a deficient number, since it is larger than the sum of its proper divisors (10720947926).

21440301514 is a wasteful number, since it uses less digits than its factorization.

21440301514 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 265724.

The product of its (nonzero) digits is 1920, while the sum is 25.

Adding to 21440301514 its reverse (41510304412), we get a palindrome (62950605926).

The spelling of 21440301514 in words is "twenty-one billion, four hundred forty million, three hundred one thousand, five hundred fourteen".