11157347489 has 2 divisors, whose sum is σ = 11157347490. Its totient is φ = 11157347488.

The previous prime is 11157347477. The next prime is 11157347543. The reversal of 11157347489 is 98474375111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11134470400 + 22877089 = 105520^2 + 4783^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11157347489 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (11157347189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5578673744 + 5578673745.

It is an arithmetic number, because the mean of its divisors is an integer number (5578673745).

Almost surely, 2^11157347489 is an apocalyptic number.

It is an amenable number.

11157347489 is a deficient number, since it is larger than the sum of its proper divisors (1).

11157347489 is an equidigital number, since it uses as much as digits as its factorization.

11157347489 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 846720, while the sum is 50.

The spelling of 11157347489 in words is "eleven billion, one hundred fifty-seven million, three hundred forty-seven thousand, four hundred eighty-nine".