11662545239593 has 2 divisors, whose sum is σ = 11662545239594. Its totient is φ = 11662545239592.

The previous prime is 11662545239551. The next prime is 11662545239713. The reversal of 11662545239593 is 39593254526611.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11243661866649 + 418883372944 = 3353157^2 + 647212^2 .

It is an emirp because it is prime and its reverse (39593254526611) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11662545239593 - 2³⁷ = 11525106286121 is a prime.

It is a super-2 number, since 2×11662545239593² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (11662545230593) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5831272619796 + 5831272619797.

It is an arithmetic number, because the mean of its divisors is an integer number (5831272619797).

Almost surely, 2^{11662545239593} is an apocalyptic number.

It is an amenable number.

11662545239593 is a deficient number, since it is larger than the sum of its proper divisors (1).

11662545239593 is an equidigital number, since it uses as much as digits as its factorization.

11662545239593 is an evil number, because the sum of its binary digits is even.

The product of its digits is 52488000, while the sum is 61.

The spelling of 11662545239593 in words is "eleven trillion, six hundred sixty-two billion, five hundred forty-five million, two hundred thirty-nine thousand, five hundred ninety-three".