21124113523308 has 18 divisors (see below), whose sum is σ = 53397064739564. Its totient is φ = 7041371174424.

The previous prime is 21124113523307. The next prime is 21124113523319. The reversal of 21124113523308 is 80332531142112.

21124113523308 is a `hidden beast` number, since 2 + 1 + 1 + 2 + 411 + 3 + 5 + 233 + 0 + 8 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 586780931203 = 21124113523308 / (2 + 1 + 1 + 2 + 4 + 1 + 1 + 3 + 5 + 2 + 3 + 3 + 0 + 8).

It is not an unprimeable number, because it can be changed into a prime (21124113523307) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 293390465566 + ... + 293390465637.

Almost surely, 2^{21124113523308} is an apocalyptic number.

It is an amenable number.

21124113523308 is an abundant number, since it is smaller than the sum of its proper divisors (32272951216256).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21124113523308 is a wasteful number, since it uses less digits than its factorization.

21124113523308 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 586780931213 (or 586780931208 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The spelling of 21124113523308 in words is "twenty-one trillion, one hundred twenty-four billion, one hundred thirteen million, five hundred twenty-three thousand, three hundred eight".