344364478261 has 4 divisors (see below), whose sum is σ = 344527454572. Its totient is φ = 344201501952.

The previous prime is 344364478253. The next prime is 344364478273. The reversal of 344364478261 is 162874463443.

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 102275877636 + 242088600625 = 319806^2 + 492025^2 .

It is a cyclic number.

It is not a de Polignac number, because 344364478261 - 2³ = 344364478253 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 344364478199 and 344364478208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (344364478231) 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, 81484986 + ... + 81489211.

It is an arithmetic number, because the mean of its divisors is an integer number (86131863643).

Almost surely, 2^344364478261 is an apocalyptic number.

It is an amenable number.

344364478261 is a deficient number, since it is larger than the sum of its proper divisors (162976311).

344364478261 is a wasteful number, since it uses less digits than its factorization.

344364478261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162976310.

The product of its digits is 9289728, while the sum is 52.

The spelling of 344364478261 in words is "three hundred forty-four billion, three hundred sixty-four million, four hundred seventy-eight thousand, two hundred sixty-one".