320444434040477 has 2 divisors, whose sum is σ = 320444434040478. Its totient is φ = 320444434040476.

The previous prime is 320444434040431. The next prime is 320444434040519. The reversal of 320444434040477 is 774040434444023.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 230097013764601 + 90347420275876 = 15168949^2 + 9505126^2 .

It is a cyclic number.

It is not a de Polignac number, because 320444434040477 - 2²⁶ = 320444366931613 is a prime.

It is a super-2 number, since 2×320444434040477² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (320444434040677) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160222217020238 + 160222217020239.

It is an arithmetic number, because the mean of its divisors is an integer number (160222217020239).

Almost surely, 2^{320444434040477} is an apocalyptic number.

It is an amenable number.

320444434040477 is a deficient number, since it is larger than the sum of its proper divisors (1).

320444434040477 is an equidigital number, since it uses as much as digits as its factorization.

320444434040477 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14450688, while the sum is 50.

The spelling of 320444434040477 in words is "three hundred twenty trillion, four hundred forty-four billion, four hundred thirty-four million, forty thousand, four hundred seventy-seven".