344205421457 has 2 divisors, whose sum is σ = 344205421458. Its totient is φ = 344205421456.

The previous prime is 344205421361. The next prime is 344205421481. The reversal of 344205421457 is 754124502443.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 273394082641 + 70811338816 = 522871^2 + 266104^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-344205421457 is a prime.

It is not a weakly prime, because it can be changed into another prime (344205421487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172102710728 + 172102710729.

It is an arithmetic number, because the mean of its divisors is an integer number (172102710729).

Almost surely, 2^344205421457 is an apocalyptic number.

It is an amenable number.

344205421457 is a deficient number, since it is larger than the sum of its proper divisors (1).

344205421457 is an equidigital number, since it uses as much as digits as its factorization.

344205421457 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 537600, while the sum is 41.

The spelling of 344205421457 in words is "three hundred forty-four billion, two hundred five million, four hundred twenty-one thousand, four hundred fifty-seven".