2783384380729 has 2 divisors, whose sum is σ = 2783384380730. Its totient is φ = 2783384380728.

The previous prime is 2783384380633. The next prime is 2783384380747. The reversal of 2783384380729 is 9270834833872.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2375676590329 + 407707790400 = 1541323^2 + 638520^2 .

It is a cyclic number.

It is not a de Polignac number, because 2783384380729 - 2¹³ = 2783384372537 is a prime.

It is a super-2 number, since 2×2783384380729² (a number of 26 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2783384380759) 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, 1391692190364 + 1391692190365.

It is an arithmetic number, because the mean of its divisors is an integer number (1391692190365).

Almost surely, 2^{2783384380729} is an apocalyptic number.

It is an amenable number.

2783384380729 is a deficient number, since it is larger than the sum of its proper divisors (1).

2783384380729 is an equidigital number, since it uses as much as digits as its factorization.

2783384380729 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 97542144, while the sum is 64.

The spelling of 2783384380729 in words is "two trillion, seven hundred eighty-three billion, three hundred eighty-four million, three hundred eighty thousand, seven hundred twenty-nine".