321142440079 has 2 divisors, whose sum is σ = 321142440080. Its totient is φ = 321142440078.

The previous prime is 321142440067. The next prime is 321142440251. The reversal of 321142440079 is 970044241123.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 321142440079 - 2²¹ = 321140342927 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (321142449079) 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 as a sum of consecutive naturals, namely, 160571220039 + 160571220040.

It is an arithmetic number, because the mean of its divisors is an integer number (160571220040).

Almost surely, 2^321142440079 is an apocalyptic number.

321142440079 is a deficient number, since it is larger than the sum of its proper divisors (1).

321142440079 is an equidigital number, since it uses as much as digits as its factorization.

321142440079 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48384, while the sum is 37.

The spelling of 321142440079 in words is "three hundred twenty-one billion, one hundred forty-two million, four hundred forty thousand, seventy-nine".