344563806661 has 4 divisors (see below), whose sum is σ = 349706550112. Its totient is φ = 339421063212.

The previous prime is 344563806659. The next prime is 344563806683. The reversal of 344563806661 is 166608365443.

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 not a de Polignac number, because 344563806661 - 2¹ = 344563806659 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 344563806599 and 344563806608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (344563809661) 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, 2571371625 + ... + 2571371758.

It is an arithmetic number, because the mean of its divisors is an integer number (87426637528).

Almost surely, 2^344563806661 is an apocalyptic number.

It is an amenable number.

344563806661 is a deficient number, since it is larger than the sum of its proper divisors (5142743451).

344563806661 is an equidigital number, since it uses as much as digits as its factorization.

344563806661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5142743450.

The product of its (nonzero) digits is 7464960, while the sum is 52.

The spelling of 344563806661 in words is "three hundred forty-four billion, five hundred sixty-three million, eight hundred six thousand, six hundred sixty-one".