202043553109 has 2 divisors, whose sum is σ = 202043553110. Its totient is φ = 202043553108.

The previous prime is 202043553091. The next prime is 202043553143. The reversal of 202043553109 is 901355340202.

Together with previous prime (202043553091) it forms an Ormiston pair, because they use the same digits, order apart.

It is an a-pointer prime, because the next prime (202043553143) can be obtained adding 202043553109 to its sum of digits (34).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 138605056209 + 63438496900 = 372297^2 + 251870^2 .

It is a cyclic number.

It is not a de Polignac number, because 202043553109 - 2³⁷ = 64604599637 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (202043553209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101021776554 + 101021776555.

It is an arithmetic number, because the mean of its divisors is an integer number (101021776555).

Almost surely, 2^202043553109 is an apocalyptic number.

It is an amenable number.

202043553109 is a deficient number, since it is larger than the sum of its proper divisors (1).

202043553109 is an equidigital number, since it uses as much as digits as its factorization.

202043553109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32400, while the sum is 34.

The spelling of 202043553109 in words is "two hundred two billion, forty-three million, five hundred fifty-three thousand, one hundred nine".