344531061661 has 4 divisors (see below), whose sum is σ = 344535314400. Its totient is φ = 344526808924.

The previous prime is 344531061647. The next prime is 344531061683. The reversal of 344531061661 is 166160135443.

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, and also an emirpimes, since its reverse is a distinct semiprime: 166160135443 = 83207 ⋅1996949.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-344531061661 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (344531061691) 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, 2002441 + ... + 2167678.

It is an arithmetic number, because the mean of its divisors is an integer number (86133828600).

Almost surely, 2^344531061661 is an apocalyptic number.

It is an amenable number.

344531061661 is a deficient number, since it is larger than the sum of its proper divisors (4252739).

344531061661 is an equidigital number, since it uses as much as digits as its factorization.

344531061661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4252738.

The product of its (nonzero) digits is 155520, while the sum is 40.

The spelling of 344531061661 in words is "three hundred forty-four billion, five hundred thirty-one million, sixty-one thousand, six hundred sixty-one".