11389499521 has 8 divisors (see below), whose sum is σ = 11479762944. Its totient is φ = 11299339680.

The previous prime is 11389499497. The next prime is 11389499617. The reversal of 11389499521 is 12599498311.

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 11389499521 - 2⁷ = 11389499393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11389499321) 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, 202836 + ... + 252826.

It is an arithmetic number, because the mean of its divisors is an integer number (1434970368).

Almost surely, 2^11389499521 is an apocalyptic number.

It is an amenable number.

11389499521 is a deficient number, since it is larger than the sum of its proper divisors (90263423).

11389499521 is a wasteful number, since it uses less digits than its factorization.

11389499521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51791.

The product of its digits is 699840, while the sum is 52.

The spelling of 11389499521 in words is "eleven billion, three hundred eighty-nine million, four hundred ninety-nine thousand, five hundred twenty-one".