11515151489 has 2 divisors, whose sum is σ = 11515151490. Its totient is φ = 11515151488.

The previous prime is 11515151449. The next prime is 11515151519. The reversal of 11515151489 is 98415151511.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11131305025 + 383846464 = 105505^2 + 19592^2 .

It is a cyclic number.

It is not a de Polignac number, because 11515151489 - 2⁸ = 11515151233 is a prime.

It is not a weakly prime, because it can be changed into another prime (11515151429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5757575744 + 5757575745.

It is an arithmetic number, because the mean of its divisors is an integer number (5757575745).

Almost surely, 2^11515151489 is an apocalyptic number.

It is an amenable number.

11515151489 is a deficient number, since it is larger than the sum of its proper divisors (1).

11515151489 is an equidigital number, since it uses as much as digits as its factorization.

11515151489 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 36000, while the sum is 41.

The spelling of 11515151489 in words is "eleven billion, five hundred fifteen million, one hundred fifty-one thousand, four hundred eighty-nine".