344278872461 has 4 divisors (see below), whose sum is σ = 344704434300. Its totient is φ = 343853310624.

The previous prime is 344278872439. The next prime is 344278872481. The reversal of 344278872461 is 164278872443.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 164278872443 = 7 ⋅23468410349.

It can be written as a sum of positive squares in 2 ways, for example, as 139581443236 + 204697429225 = 373606^2 + 452435^2 .

It is a cyclic number.

It is not a de Polignac number, because 344278872461 - 2⁶ = 344278872397 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 344278872397 and 344278872406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (344278872481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 212779706 + ... + 212781323.

It is an arithmetic number, because the mean of its divisors is an integer number (86176108575).

Almost surely, 2^344278872461 is an apocalyptic number.

It is an amenable number.

344278872461 is a deficient number, since it is larger than the sum of its proper divisors (425561839).

344278872461 is an equidigital number, since it uses as much as digits as its factorization.

344278872461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 425561838.

The product of its digits is 14450688, while the sum is 56.

The spelling of 344278872461 in words is "three hundred forty-four billion, two hundred seventy-eight million, eight hundred seventy-two thousand, four hundred sixty-one".