433378674649621 has 2 divisors, whose sum is σ = 433378674649622. Its totient is φ = 433378674649620.

The previous prime is 433378674649603. The next prime is 433378674649643. The reversal of 433378674649621 is 126946476873334.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 422160100506225 + 11218574143396 = 20546535^2 + 3349414^2 .

It is a cyclic number.

It is not a de Polignac number, because 433378674649621 - 2¹⁹ = 433378674125333 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (433378674649121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 216689337324810 + 216689337324811.

It is an arithmetic number, because the mean of its divisors is an integer number (216689337324811).

Almost surely, 2^{433378674649621} is an apocalyptic number.

It is an amenable number.

433378674649621 is a deficient number, since it is larger than the sum of its proper divisors (1).

433378674649621 is an equidigital number, since it uses as much as digits as its factorization.

433378674649621 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2633637888, while the sum is 73.

The spelling of 433378674649621 in words is "four hundred thirty-three trillion, three hundred seventy-eight billion, six hundred seventy-four million, six hundred forty-nine thousand, six hundred twenty-one".