10200155561 has 2 divisors, whose sum is σ = 10200155562. Its totient is φ = 10200155560.

The previous prime is 10200155543. The next prime is 10200155591. The reversal of 10200155561 is 16555100201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5532533161 + 4667622400 = 74381^2 + 68320^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10200155561 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 10200155561.

It is not a weakly prime, because it can be changed into another prime (10200155591) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5100077780 + 5100077781.

It is an arithmetic number, because the mean of its divisors is an integer number (5100077781).

Almost surely, 2^10200155561 is an apocalyptic number.

It is an amenable number.

10200155561 is a deficient number, since it is larger than the sum of its proper divisors (1).

10200155561 is an equidigital number, since it uses as much as digits as its factorization.

10200155561 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1500, while the sum is 26.

Adding to 10200155561 its reverse (16555100201), we get a palindrome (26755255762).

The spelling of 10200155561 in words is "ten billion, two hundred million, one hundred fifty-five thousand, five hundred sixty-one".