21655304440114 has 8 divisors (see below), whose sum is σ = 33603058614060. Its totient is φ = 10454284902096.

The previous prime is 21655304440093. The next prime is 21655304440129. The reversal of 21655304440114 is 41104440355612.

It can be written as a sum of positive squares in 2 ways, for example, as 21649636608889 + 5667831225 = 4652917^2 + 75285^2 .

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

It is a super-2 number, since 2×21655304440114² (a number of 27 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, 186683658909 + ... + 186683659024.

Almost surely, 2^{21655304440114} is an apocalyptic number.

21655304440114 is a deficient number, since it is larger than the sum of its proper divisors (11947754173946).

21655304440114 is a wasteful number, since it uses less digits than its factorization.

21655304440114 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 373367317964.

The product of its (nonzero) digits is 230400, while the sum is 40.

Adding to 21655304440114 its reverse (41104440355612), we get a palindrome (62759744795726).

The spelling of 21655304440114 in words is "twenty-one trillion, six hundred fifty-five billion, three hundred four million, four hundred forty thousand, one hundred fourteen".