21243524414 has 16 divisors (see below), whose sum is σ = 36683294688. Its totient is φ = 9037911552.

The previous prime is 21243524413. The next prime is 21243524417. The reversal of 21243524414 is 41442534212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21243524413) 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, 5536019 + ... + 5539854.

It is an arithmetic number, because the mean of its divisors is an integer number (2292705918).

Almost surely, 2^21243524414 is an apocalyptic number.

21243524414 is a deficient number, since it is larger than the sum of its proper divisors (15439770274).

21243524414 is a wasteful number, since it uses less digits than its factorization.

21243524414 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11076019.

The product of its digits is 30720, while the sum is 32.

The spelling of 21243524414 in words is "twenty-one billion, two hundred forty-three million, five hundred twenty-four thousand, four hundred fourteen".