10203605556541 has 2 divisors, whose sum is σ = 10203605556542. Its totient is φ = 10203605556540.

The previous prime is 10203605556493. The next prime is 10203605556629. The reversal of 10203605556541 is 14565550630201.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9642235988025 + 561369568516 = 3105195^2 + 749246^2 .

It is an emirp because it is prime and its reverse (14565550630201) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 10203605556541 - 2¹⁷ = 10203605425469 is a prime.

It is a super-2 number, since 2×10203605556541² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10203605556841) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5101802778270 + 5101802778271.

It is an arithmetic number, because the mean of its divisors is an integer number (5101802778271).

Almost surely, 2^{10203605556541} is an apocalyptic number.

It is an amenable number.

10203605556541 is a deficient number, since it is larger than the sum of its proper divisors (1).

10203605556541 is an equidigital number, since it uses as much as digits as its factorization.

10203605556541 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 540000, while the sum is 43.

The spelling of 10203605556541 in words is "ten trillion, two hundred three billion, six hundred five million, five hundred fifty-six thousand, five hundred forty-one".