10203621161543 has 2 divisors, whose sum is σ = 10203621161544. Its totient is φ = 10203621161542.

The previous prime is 10203621161521. The next prime is 10203621161567. The reversal of 10203621161543 is 34516112630201.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 10203621161543 - 2³⁴ = 10186441292359 is a prime.

It is a super-2 number, since 2×10203621161543² (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 (10203621161593) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5101810580771 + 5101810580772.

It is an arithmetic number, because the mean of its divisors is an integer number (5101810580772).

Almost surely, 2^{10203621161543} is an apocalyptic number.

10203621161543 is a deficient number, since it is larger than the sum of its proper divisors (1).

10203621161543 is an equidigital number, since it uses as much as digits as its factorization.

10203621161543 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 25920, while the sum is 35.

Adding to 10203621161543 its reverse (34516112630201), we get a palindrome (44719733791744).

The spelling of 10203621161543 in words is "ten trillion, two hundred three billion, six hundred twenty-one million, one hundred sixty-one thousand, five hundred forty-three".