10566410621 has 4 divisors (see below), whose sum is σ = 11379211452. Its totient is φ = 9753609792.

The previous prime is 10566410573. The next prime is 10566410669. The reversal of 10566410621 is 12601466501.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (10566410573) and next prime (10566410669).

It can be written as a sum of positive squares in 2 ways, for example, as 5067446596 + 5498964025 = 71186^2 + 74155^2 .

It is a cyclic number.

It is not a de Polignac number, because 10566410621 - 2⁶ = 10566410557 is a prime.

It is a super-2 number, since 2×10566410621² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10566310621) 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, 406400396 + ... + 406400421.

It is an arithmetic number, because the mean of its divisors is an integer number (2844802863).

Almost surely, 2^10566410621 is an apocalyptic number.

It is an amenable number.

10566410621 is a deficient number, since it is larger than the sum of its proper divisors (812800831).

10566410621 is an equidigital number, since it uses as much as digits as its factorization.

10566410621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 812800830.

The product of its (nonzero) digits is 8640, while the sum is 32.

The spelling of 10566410621 in words is "ten billion, five hundred sixty-six million, four hundred ten thousand, six hundred twenty-one".