73543665061541 has 2 divisors, whose sum is σ = 73543665061542. Its totient is φ = 73543665061540.

The previous prime is 73543665061483. The next prime is 73543665061553. The reversal of 73543665061541 is 14516056634537.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 48114740917441 + 25428924144100 = 6936479^2 + 5042710^2 .

It is a cyclic number.

It is not a de Polignac number, because 73543665061541 - 2³⁴ = 73526485192357 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (73543665061241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36771832530770 + 36771832530771.

It is an arithmetic number, because the mean of its divisors is an integer number (36771832530771).

Almost surely, 2^{73543665061541} is an apocalyptic number.

It is an amenable number.

73543665061541 is a deficient number, since it is larger than the sum of its proper divisors (1).

73543665061541 is an equidigital number, since it uses as much as digits as its factorization.

73543665061541 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27216000, while the sum is 56.

The spelling of 73543665061541 in words is "seventy-three trillion, five hundred forty-three billion, six hundred sixty-five million, sixty-one thousand, five hundred forty-one".