323885621629 has 2 divisors, whose sum is σ = 323885621630. Its totient is φ = 323885621628.

The previous prime is 323885621611. The next prime is 323885621641. The reversal of 323885621629 is 926126588323.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 208963265625 + 114922356004 = 457125^2 + 339002^2 .

It is a cyclic number.

It is not a de Polignac number, because 323885621629 - 2¹⁷ = 323885490557 is a prime.

It is a super-2 number, since 2×323885621629² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 323885621629.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (323885621729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 161942810814 + 161942810815.

It is an arithmetic number, because the mean of its divisors is an integer number (161942810815).

Almost surely, 2^323885621629 is an apocalyptic number.

It is an amenable number.

323885621629 is a deficient number, since it is larger than the sum of its proper divisors (1).

323885621629 is an equidigital number, since it uses as much as digits as its factorization.

323885621629 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7464960, while the sum is 55.

The spelling of 323885621629 in words is "three hundred twenty-three billion, eight hundred eighty-five million, six hundred twenty-one thousand, six hundred twenty-nine".