11643210590549 has 2 divisors, whose sum is σ = 11643210590550. Its totient is φ = 11643210590548.

The previous prime is 11643210590537. The next prime is 11643210590563. The reversal of 11643210590549 is 94509501234611.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9513566541649 + 2129644048900 = 3084407^2 + 1459330^2 .

It is a cyclic number.

It is not a de Polignac number, because 11643210590549 - 2⁴⁰ = 10543698962773 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11643210590497 and 11643210590506.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11643210590579) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5821605295274 + 5821605295275.

It is an arithmetic number, because the mean of its divisors is an integer number (5821605295275).

Almost surely, 2^{11643210590549} is an apocalyptic number.

It is an amenable number.

11643210590549 is a deficient number, since it is larger than the sum of its proper divisors (1).

11643210590549 is an equidigital number, since it uses as much as digits as its factorization.

11643210590549 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1166400, while the sum is 50.

The spelling of 11643210590549 in words is "eleven trillion, six hundred forty-three billion, two hundred ten million, five hundred ninety thousand, five hundred forty-nine".