20344343430379 has 2 divisors, whose sum is σ = 20344343430380. Its totient is φ = 20344343430378.

The previous prime is 20344343430349. The next prime is 20344343430473. The reversal of 20344343430379 is 97303434344302.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20344343430379 - 2¹⁹ = 20344342906091 is a prime.

It is a super-2 number, since 2×20344343430379² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (20344343430349) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10172171715189 + 10172171715190.

It is an arithmetic number, because the mean of its divisors is an integer number (10172171715190).

Almost surely, 2^{20344343430379} is an apocalyptic number.

20344343430379 is a deficient number, since it is larger than the sum of its proper divisors (1).

20344343430379 is an equidigital number, since it uses as much as digits as its factorization.

20344343430379 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7838208, while the sum is 49.

The spelling of 20344343430379 in words is "twenty trillion, three hundred forty-four billion, three hundred forty-three million, four hundred thirty thousand, three hundred seventy-nine".