11512431589 has 2 divisors, whose sum is σ = 11512431590. Its totient is φ = 11512431588.

The previous prime is 11512431577. The next prime is 11512431641. The reversal of 11512431589 is 98513421511.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6187080964 + 5325350625 = 78658^2 + 72975^2 .

It is a cyclic number.

It is not a de Polignac number, because 11512431589 - 2⁷ = 11512431461 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11512431089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5756215794 + 5756215795.

It is an arithmetic number, because the mean of its divisors is an integer number (5756215795).

Almost surely, 2^11512431589 is an apocalyptic number.

It is an amenable number.

11512431589 is a deficient number, since it is larger than the sum of its proper divisors (1).

11512431589 is an equidigital number, since it uses as much as digits as its factorization.

11512431589 is an evil number, because the sum of its binary digits is even.

The product of its digits is 43200, while the sum is 40.

The spelling of 11512431589 in words is "eleven billion, five hundred twelve million, four hundred thirty-one thousand, five hundred eighty-nine".