21164003624345 has 8 divisors (see below), whose sum is σ = 25718282885760. Its totient is φ = 16716883875120.

The previous prime is 21164003624341. The next prime is 21164003624371. The reversal of 21164003624345 is 54342630046112.

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

It is not a de Polignac number, because 21164003624345 - 2² = 21164003624341 is a prime.

It is a super-2 number, since 2×21164003624345² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21164003624341) 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, 26789877611 + ... + 26789878400.

It is an arithmetic number, because the mean of its divisors is an integer number (3214785360720).

Almost surely, 2^{21164003624345} is an apocalyptic number.

It is an amenable number.

21164003624345 is a deficient number, since it is larger than the sum of its proper divisors (4554279261415).

21164003624345 is an equidigital number, since it uses as much as digits as its factorization.

21164003624345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53579756095.

The product of its (nonzero) digits is 414720, while the sum is 41.

The spelling of 21164003624345 in words is "twenty-one trillion, one hundred sixty-four billion, three million, six hundred twenty-four thousand, three hundred forty-five".