21324010004555 has 8 divisors (see below), whose sum is σ = 25589100664944. Its totient is φ = 17059015564000.

The previous prime is 21324010004537. The next prime is 21324010004573. The reversal of 21324010004555 is 55540001042312.

It is an interprime number because it is at equal distance from previous prime (21324010004537) and next prime (21324010004573).

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

It is not a de Polignac number, because 21324010004555 - 2⁶ = 21324010004491 is a prime.

It is a super-3 number, since 3×21324010004555³ (a number of 41 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23566496 + ... + 24454605.

It is an arithmetic number, because the mean of its divisors is an integer number (3198637583118).

Almost surely, 2^{21324010004555} is an apocalyptic number.

21324010004555 is a deficient number, since it is larger than the sum of its proper divisors (4265090660389).

21324010004555 is an equidigital number, since it uses as much as digits as its factorization.

21324010004555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48109917.

The product of its (nonzero) digits is 24000, while the sum is 32.

Adding to 21324010004555 its reverse (55540001042312), we get a palindrome (76864011046867).

The spelling of 21324010004555 in words is "twenty-one trillion, three hundred twenty-four billion, ten million, four thousand, five hundred fifty-five".