203779140304889 has 2 divisors, whose sum is σ = 203779140304890. Its totient is φ = 203779140304888.

The previous prime is 203779140304867. The next prime is 203779140304931. The reversal of 203779140304889 is 988403041977302.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 163128888484864 + 40650251820025 = 12772192^2 + 6375755^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-203779140304889 is a prime.

It is not a weakly prime, because it can be changed into another prime (203779140304849) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101889570152444 + 101889570152445.

It is an arithmetic number, because the mean of its divisors is an integer number (101889570152445).

Almost surely, 2^{203779140304889} is an apocalyptic number.

It is an amenable number.

203779140304889 is a deficient number, since it is larger than the sum of its proper divisors (1).

203779140304889 is an equidigital number, since it uses as much as digits as its factorization.

203779140304889 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 73156608, while the sum is 65.

The spelling of 203779140304889 in words is "two hundred three trillion, seven hundred seventy-nine billion, one hundred forty million, three hundred four thousand, eight hundred eighty-nine".