21441554315354 has 8 divisors (see below), whose sum is σ = 32162354506848. Its totient is φ = 10720769479740.

The previous prime is 21441554315353. The next prime is 21441554315393. The reversal of 21441554315354 is 45351345514412.

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

It is a junction number, because it is equal to n+sod(n) for n = 21441554315299 and 21441554315308.

It is not an unprimeable number, because it can be changed into a prime (21441554315353) 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 3 ways as a sum of consecutive naturals, for example, 747899 + ... + 6591089.

It is an arithmetic number, because the mean of its divisors is an integer number (4020294313356).

Almost surely, 2^{21441554315354} is an apocalyptic number.

21441554315354 is a deficient number, since it is larger than the sum of its proper divisors (10720800191494).

21441554315354 is a wasteful number, since it uses less digits than its factorization.

21441554315354 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7677940.

The product of its digits is 2880000, while the sum is 47.

Adding to 21441554315354 its reverse (45351345514412), we get a palindrome (66792899829766).

The spelling of 21441554315354 in words is "twenty-one trillion, four hundred forty-one billion, five hundred fifty-four million, three hundred fifteen thousand, three hundred fifty-four".