10566136452821 has 4 divisors (see below), whose sum is σ = 10566148389600. Its totient is φ = 10566124516044.

The previous prime is 10566136452803. The next prime is 10566136452889. The reversal of 10566136452821 is 12825463166501.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10566136452821 is a prime.

It is a super-2 number, since 2×10566136452821² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 10566136452821.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10566136472821) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4524131 + ... + 6449808.

It is an arithmetic number, because the mean of its divisors is an integer number (2641537097400).

Almost surely, 2^{10566136452821} is an apocalyptic number.

It is an amenable number.

10566136452821 is a deficient number, since it is larger than the sum of its proper divisors (11936779).

10566136452821 is an equidigital number, since it uses as much as digits as its factorization.

10566136452821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11936778.

The product of its (nonzero) digits is 2073600, while the sum is 50.

The spelling of 10566136452821 in words is "ten trillion, five hundred sixty-six billion, one hundred thirty-six million, four hundred fifty-two thousand, eight hundred twenty-one".