20102344859 has 2 divisors, whose sum is σ = 20102344860. Its totient is φ = 20102344858.

The previous prime is 20102344853. The next prime is 20102344861. The reversal of 20102344859 is 95844320102.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20102344859 is a prime.

Together with 20102344861, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (20102344853) 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, 10051172429 + 10051172430.

It is an arithmetic number, because the mean of its divisors is an integer number (10051172430).

Almost surely, 2^20102344859 is an apocalyptic number.

20102344859 is a deficient number, since it is larger than the sum of its proper divisors (1).

20102344859 is an equidigital number, since it uses as much as digits as its factorization.

20102344859 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 69120, while the sum is 38.

The spelling of 20102344859 in words is "twenty billion, one hundred two million, three hundred forty-four thousand, eight hundred fifty-nine".