21602350766213 has 8 divisors (see below), whose sum is σ = 24965798639040. Its totient is φ = 18308252334240.

The previous prime is 21602350766099. The next prime is 21602350766221. The reversal of 21602350766213 is 31266705320612.

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 21602350766213 - 2¹⁸ = 21602350504069 is a prime.

It is a super-2 number, since 2×21602350766213² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21602350766273) 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, 17337359543 + ... + 17337360788.

It is an arithmetic number, because the mean of its divisors is an integer number (3120724829880).

Almost surely, 2^{21602350766213} is an apocalyptic number.

It is an amenable number.

21602350766213 is a deficient number, since it is larger than the sum of its proper divisors (3363447872827).

21602350766213 is an equidigital number, since it uses as much as digits as its factorization.

21602350766213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34674720427.

The product of its (nonzero) digits is 544320, while the sum is 44.

The spelling of 21602350766213 in words is "twenty-one trillion, six hundred two billion, three hundred fifty million, seven hundred sixty-six thousand, two hundred thirteen".