9994540375541 has 2 divisors, whose sum is σ = 9994540375542. Its totient is φ = 9994540375540.

The previous prime is 9994540375517. The next prime is 9994540375577. The reversal of 9994540375541 is 1455730454999.

9994540375541 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9914595075025 + 79945300516 = 3148745^2 + 282746^2 .

It is a cyclic number.

It is not a de Polignac number, because 9994540375541 - 2¹⁰ = 9994540374517 is a prime.

It is a super-2 number, since 2×9994540375541² (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 (9994540375241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4997270187770 + 4997270187771.

It is an arithmetic number, because the mean of its divisors is an integer number (4997270187771).

Almost surely, 2^{9994540375541} is an apocalyptic number.

It is an amenable number.

9994540375541 is a deficient number, since it is larger than the sum of its proper divisors (1).

9994540375541 is an equidigital number, since it uses as much as digits as its factorization.

9994540375541 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 122472000, while the sum is 65.

The spelling of 9994540375541 in words is "nine trillion, nine hundred ninety-four billion, five hundred forty million, three hundred seventy-five thousand, five hundred forty-one".