321440070356017 has 4 divisors (see below), whose sum is σ = 321461983252980. Its totient is φ = 321418157459056.

The previous prime is 321440070355931. The next prime is 321440070356021. The reversal of 321440070356017 is 710653070044123.

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 196720849569841 + 124719220786176 = 14025721^2 + 11167776^2 .

It is a cyclic number.

It is not a de Polignac number, because 321440070356017 - 2⁷ = 321440070355889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (321440070356047) 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, 10956426478 + ... + 10956455815.

It is an arithmetic number, because the mean of its divisors is an integer number (80365495813245).

Almost surely, 2^{321440070356017} is an apocalyptic number.

It is an amenable number.

321440070356017 is a deficient number, since it is larger than the sum of its proper divisors (21912896963).

321440070356017 is a wasteful number, since it uses less digits than its factorization.

321440070356017 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21912896962.

The product of its (nonzero) digits is 423360, while the sum is 43.

The spelling of 321440070356017 in words is "three hundred twenty-one trillion, four hundred forty billion, seventy million, three hundred fifty-six thousand, seventeen".