10343644126661 has 4 divisors (see below), whose sum is σ = 10346585172012. Its totient is φ = 10340703081312.

The previous prime is 10343644126609. The next prime is 10343644126679. The reversal of 10343644126661 is 16662144634301.

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

It can be written as a sum of positive squares in 2 ways, for example, as 9782388437761 + 561255688900 = 3127681^2 + 749170^2 .

It is a cyclic number.

It is not a de Polignac number, because 10343644126661 - 2¹⁸ = 10343643864517 is a prime.

It is a super-2 number, since 2×10343644126661² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10343644186661) 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 3 ways as a sum of consecutive naturals, for example, 1470517400 + ... + 1470524433.

It is an arithmetic number, because the mean of its divisors is an integer number (2586646293003).

Almost surely, 2^{10343644126661} is an apocalyptic number.

It is an amenable number.

10343644126661 is a deficient number, since it is larger than the sum of its proper divisors (2941045351).

10343644126661 is an equidigital number, since it uses as much as digits as its factorization.

10343644126661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2941045350.

The product of its (nonzero) digits is 1492992, while the sum is 47.

The spelling of 10343644126661 in words is "ten trillion, three hundred forty-three billion, six hundred forty-four million, one hundred twenty-six thousand, six hundred sixty-one".