321429805553117 has 2 divisors, whose sum is σ = 321429805553118. Its totient is φ = 321429805553116.

The previous prime is 321429805553069. The next prime is 321429805553179. The reversal of 321429805553117 is 711355508924123.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 306937119983641 + 14492685569476 = 17519621^2 + 3806926^2 .

It is a cyclic number.

It is not a de Polignac number, because 321429805553117 - 2⁶ = 321429805553053 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (321429805553917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160714902776558 + 160714902776559.

It is an arithmetic number, because the mean of its divisors is an integer number (160714902776559).

Almost surely, 2^{321429805553117} is an apocalyptic number.

It is an amenable number.

321429805553117 is a deficient number, since it is larger than the sum of its proper divisors (1).

321429805553117 is an equidigital number, since it uses as much as digits as its factorization.

321429805553117 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9072000, while the sum is 56.

The spelling of 321429805553117 in words is "three hundred twenty-one trillion, four hundred twenty-nine billion, eight hundred five million, five hundred fifty-three thousand, one hundred seventeen".