11601863321 has 2 divisors, whose sum is σ = 11601863322. Its totient is φ = 11601863320.

The previous prime is 11601863281. The next prime is 11601863363. The reversal of 11601863321 is 12336810611.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7282744921 + 4319118400 = 85339^2 + 65720^2 .

It is an emirp because it is prime and its reverse (12336810611) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11601863321 - 2⁶ = 11601863257 is a prime.

It is not a weakly prime, because it can be changed into another prime (11601863381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5800931660 + 5800931661.

It is an arithmetic number, because the mean of its divisors is an integer number (5800931661).

Almost surely, 2^11601863321 is an apocalyptic number.

It is an amenable number.

11601863321 is a deficient number, since it is larger than the sum of its proper divisors (1).

11601863321 is an equidigital number, since it uses as much as digits as its factorization.

11601863321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 32.

The spelling of 11601863321 in words is "eleven billion, six hundred one million, eight hundred sixty-three thousand, three hundred twenty-one".