20100550439 has 2 divisors, whose sum is σ = 20100550440. Its totient is φ = 20100550438.

The previous prime is 20100550391. The next prime is 20100550453. The reversal of 20100550439 is 93405500102.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20100550439 - 2¹⁶ = 20100484903 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20100550039) 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, 10050275219 + 10050275220.

It is an arithmetic number, because the mean of its divisors is an integer number (10050275220).

Almost surely, 2^20100550439 is an apocalyptic number.

20100550439 is a deficient number, since it is larger than the sum of its proper divisors (1).

20100550439 is an equidigital number, since it uses as much as digits as its factorization.

20100550439 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5400, while the sum is 29.

The spelling of 20100550439 in words is "twenty billion, one hundred million, five hundred fifty thousand, four hundred thirty-nine".