21540044335035 has 8 divisors (see below), whose sum is σ = 34464070936080. Its totient is φ = 11488023645344.

The previous prime is 21540044334889. The next prime is 21540044335037. The reversal of 21540044335035 is 53053344004512.

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 21540044335035 - 2¹² = 21540044330939 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21540044334984 and 21540044335002.

It is not an unprimeable number, because it can be changed into a prime (21540044335037) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 718001477820 + ... + 718001477849.

It is an arithmetic number, because the mean of its divisors is an integer number (4308008867010).

Almost surely, 2^{21540044335035} is an apocalyptic number.

21540044335035 is a deficient number, since it is larger than the sum of its proper divisors (12924026601045).

21540044335035 is a wasteful number, since it uses less digits than its factorization.

21540044335035 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1436002955677.

The product of its (nonzero) digits is 432000, while the sum is 39.

Adding to 21540044335035 its reverse (53053344004512), we get a palindrome (74593388339547).

The spelling of 21540044335035 in words is "twenty-one trillion, five hundred forty billion, forty-four million, three hundred thirty-five thousand, thirty-five".