203340151561 has 2 divisors, whose sum is σ = 203340151562. Its totient is φ = 203340151560.

The previous prime is 203340151517. The next prime is 203340151583. The reversal of 203340151561 is 165151043302.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 118735376400 + 84604775161 = 344580^2 + 290869^2 .

It is a cyclic number.

It is not a de Polignac number, because 203340151561 - 2¹¹ = 203340149513 is a prime.

It is not a weakly prime, because it can be changed into another prime (203340151501) 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, 101670075780 + 101670075781.

It is an arithmetic number, because the mean of its divisors is an integer number (101670075781).

Almost surely, 2^203340151561 is an apocalyptic number.

It is an amenable number.

203340151561 is a deficient number, since it is larger than the sum of its proper divisors (1).

203340151561 is an equidigital number, since it uses as much as digits as its factorization.

203340151561 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10800, while the sum is 31.

Adding to 203340151561 its reverse (165151043302), we get a palindrome (368491194863).

The spelling of 203340151561 in words is "two hundred three billion, three hundred forty million, one hundred fifty-one thousand, five hundred sixty-one".