11658843081541 has 2 divisors, whose sum is σ = 11658843081542. Its totient is φ = 11658843081540.

The previous prime is 11658843081469. The next prime is 11658843081629. The reversal of 11658843081541 is 14518034885611.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7148618216100 + 4510224865441 = 2673690^2 + 2123729^2 .

It is a cyclic number.

It is not a de Polignac number, because 11658843081541 - 2¹¹ = 11658843079493 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11658843085541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5829421540770 + 5829421540771.

It is an arithmetic number, because the mean of its divisors is an integer number (5829421540771).

Almost surely, 2^{11658843081541} is an apocalyptic number.

It is an amenable number.

11658843081541 is a deficient number, since it is larger than the sum of its proper divisors (1).

11658843081541 is an equidigital number, since it uses as much as digits as its factorization.

11658843081541 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3686400, while the sum is 55.

The spelling of 11658843081541 in words is "eleven trillion, six hundred fifty-eight billion, eight hundred forty-three million, eighty-one thousand, five hundred forty-one".