11111390289 has 12 divisors (see below), whose sum is σ = 16056672372. Its totient is φ = 7404415200.

The previous prime is 11111390287. The next prime is 11111390293. The reversal of 11111390289 is 98209311111.

It can be written as a sum of positive squares in 2 ways, for example, as 3321562689 + 7789827600 = 57633^2 + 88260^2 .

It is not a de Polignac number, because 11111390289 - 2¹ = 11111390287 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11111390287) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 242622 + ... + 284759.

It is an arithmetic number, because the mean of its divisors is an integer number (1338056031).

Almost surely, 2^11111390289 is an apocalyptic number.

It is an amenable number.

11111390289 is a deficient number, since it is larger than the sum of its proper divisors (4945282083).

11111390289 is a wasteful number, since it uses less digits than its factorization.

11111390289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 529728 (or 529725 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 36.

The spelling of 11111390289 in words is "eleven billion, one hundred eleven million, three hundred ninety thousand, two hundred eighty-nine".