11469385521 has 12 divisors (see below), whose sum is σ = 18072971280. Its totient is φ = 6951142680.

The previous prime is 11469385489. The next prime is 11469385523. The reversal of 11469385521 is 12558396411.

It is a happy number.

11469385521 is a `hidden beast` number, since 1 + 1 + 4 + 6 + 93 + 8 + 552 + 1 = 666.

It is not a de Polignac number, because 11469385521 - 2⁵ = 11469385489 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (11469385523) 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, 57926091 + ... + 57926288.

It is an arithmetic number, because the mean of its divisors is an integer number (1506080940).

Almost surely, 2^11469385521 is an apocalyptic number.

11469385521 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11469385521 is a deficient number, since it is larger than the sum of its proper divisors (6603585759).

11469385521 is a wasteful number, since it uses less digits than its factorization.

11469385521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115852396 (or 115852393 counting only the distinct ones).

The product of its digits is 259200, while the sum is 45.

The spelling of 11469385521 in words is "eleven billion, four hundred sixty-nine million, three hundred eighty-five thousand, five hundred twenty-one".