11842578689 has 2 divisors, whose sum is σ = 11842578690. Its totient is φ = 11842578688.

The previous prime is 11842578679. The next prime is 11842578697. The reversal of 11842578689 is 98687524811.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11456063089 + 386515600 = 107033^2 + 19660^2 .

It is a cyclic number.

It is not a de Polignac number, because 11842578689 - 2¹⁶ = 11842513153 is a prime.

It is not a weakly prime, because it can be changed into another prime (11842578619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5921289344 + 5921289345.

It is an arithmetic number, because the mean of its divisors is an integer number (5921289345).

Almost surely, 2^11842578689 is an apocalyptic number.

It is an amenable number.

11842578689 is a deficient number, since it is larger than the sum of its proper divisors (1).

11842578689 is an equidigital number, since it uses as much as digits as its factorization.

11842578689 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7741440, while the sum is 59.

The spelling of 11842578689 in words is "eleven billion, eight hundred forty-two million, five hundred seventy-eight thousand, six hundred eighty-nine".