203040555169 has 2 divisors, whose sum is σ = 203040555170. Its totient is φ = 203040555168.

The previous prime is 203040555121. The next prime is 203040555187. The reversal of 203040555169 is 961555040302.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 171178305169 + 31862250000 = 413737^2 + 178500^2 .

It is a cyclic number.

It is not a de Polignac number, because 203040555169 - 2²⁷ = 202906337441 is a prime.

It is a super-2 number, since 2×203040555169² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (203040553169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101520277584 + 101520277585.

It is an arithmetic number, because the mean of its divisors is an integer number (101520277585).

Almost surely, 2^203040555169 is an apocalyptic number.

It is an amenable number.

203040555169 is a deficient number, since it is larger than the sum of its proper divisors (1).

203040555169 is an equidigital number, since it uses as much as digits as its factorization.

203040555169 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 162000, while the sum is 40.

The spelling of 203040555169 in words is "two hundred three billion, forty million, five hundred fifty-five thousand, one hundred sixty-nine".