21035200504555 has 8 divisors (see below), whose sum is σ = 25271694800352. Its totient is φ = 16808524273728.

The previous prime is 21035200504553. The next prime is 21035200504561. The reversal of 21035200504555 is 55540500253012.

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 21035200504555 - 2¹ = 21035200504553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21035200504553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2454511527 + ... + 2454520096.

It is an arithmetic number, because the mean of its divisors is an integer number (3158961850044).

Almost surely, 2^{21035200504555} is an apocalyptic number.

21035200504555 is a deficient number, since it is larger than the sum of its proper divisors (4236494295797).

21035200504555 is an equidigital number, since it uses as much as digits as its factorization.

21035200504555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4909032485.

The product of its (nonzero) digits is 150000, while the sum is 37.

Adding to 21035200504555 its reverse (55540500253012), we get a palindrome (76575700757567).

The spelling of 21035200504555 in words is "twenty-one trillion, thirty-five billion, two hundred million, five hundred four thousand, five hundred fifty-five".