11289521249 has 8 divisors (see below), whose sum is σ = 11436523560. Its totient is φ = 11143143936.

The previous prime is 11289521233. The next prime is 11289521281. The reversal of 11289521249 is 94212598211.

It can be written as a sum of positive squares in 4 ways, for example, as 1169161249 + 10120360000 = 34193^2 + 100600^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11289521249 - 2⁴ = 11289521233 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11289521219) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 119834 + ... + 192195.

It is an arithmetic number, because the mean of its divisors is an integer number (1429565445).

Almost surely, 2^11289521249 is an apocalyptic number.

It is an amenable number.

11289521249 is a deficient number, since it is larger than the sum of its proper divisors (147002311).

11289521249 is an equidigital number, since it uses as much as digits as its factorization.

11289521249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 312499.

The product of its digits is 103680, while the sum is 44.

The spelling of 11289521249 in words is "eleven billion, two hundred eighty-nine million, five hundred twenty-one thousand, two hundred forty-nine".