20101343389 has 2 divisors, whose sum is σ = 20101343390. Its totient is φ = 20101343388.

The previous prime is 20101343357. The next prime is 20101343401. The reversal of 20101343389 is 98334310102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19346028100 + 755315289 = 139090^2 + 27483^2 .

It is a cyclic number.

It is not a de Polignac number, because 20101343389 - 2⁵ = 20101343357 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20101343989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10050671694 + 10050671695.

It is an arithmetic number, because the mean of its divisors is an integer number (10050671695).

Almost surely, 2^20101343389 is an apocalyptic number.

It is an amenable number.

20101343389 is a deficient number, since it is larger than the sum of its proper divisors (1).

20101343389 is an equidigital number, since it uses as much as digits as its factorization.

20101343389 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15552, while the sum is 34.

The spelling of 20101343389 in words is "twenty billion, one hundred one million, three hundred forty-three thousand, three hundred eighty-nine".