11650440305989 has 2 divisors, whose sum is σ = 11650440305990. Its totient is φ = 11650440305988.

The previous prime is 11650440305981. The next prime is 11650440306061. The reversal of 11650440305989 is 98950304405611.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6953610780900 + 4696829525089 = 2636970^2 + 2167217^2 .

It is a cyclic number.

It is not a de Polignac number, because 11650440305989 - 2³ = 11650440305981 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11650440305981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5825220152994 + 5825220152995.

It is an arithmetic number, because the mean of its divisors is an integer number (5825220152995).

Almost surely, 2^{11650440305989} is an apocalyptic number.

It is an amenable number.

11650440305989 is a deficient number, since it is larger than the sum of its proper divisors (1).

11650440305989 is an equidigital number, since it uses as much as digits as its factorization.

11650440305989 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4665600, while the sum is 55.

The spelling of 11650440305989 in words is "eleven trillion, six hundred fifty billion, four hundred forty million, three hundred five thousand, nine hundred eighty-nine".