10565236645421 has 8 divisors (see below), whose sum is σ = 10599353793600. Its totient is φ = 10531120429440.

The previous prime is 10565236645417. The next prime is 10565236645423. The reversal of 10565236645421 is 12454663256501.

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 10565236645421 - 2² = 10565236645417 is a prime.

It is a super-2 number, since 2×10565236645421² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 10565236645421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10565236645423) 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, 27966890 + ... + 28342148.

It is an arithmetic number, because the mean of its divisors is an integer number (1324919224200).

Almost surely, 2^{10565236645421} is an apocalyptic number.

It is an amenable number.

10565236645421 is a deficient number, since it is larger than the sum of its proper divisors (34117148179).

10565236645421 is an equidigital number, since it uses as much as digits as its factorization.

10565236645421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 466099.

The product of its (nonzero) digits is 5184000, while the sum is 50.

The spelling of 10565236645421 in words is "ten trillion, five hundred sixty-five billion, two hundred thirty-six million, six hundred forty-five thousand, four hundred twenty-one".