21352450115 has 8 divisors (see below), whose sum is σ = 25624291680. Its totient is φ = 17081059072.

The previous prime is 21352450099. The next prime is 21352450117. The reversal of 21352450115 is 51105425312.

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 21352450115 - 2⁴ = 21352450099 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21352450117) 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, 2306 + ... + 206664.

It is an arithmetic number, because the mean of its divisors is an integer number (3203036460).

Almost surely, 2^21352450115 is an apocalyptic number.

21352450115 is a deficient number, since it is larger than the sum of its proper divisors (4271841565).

21352450115 is a wasteful number, since it uses less digits than its factorization.

21352450115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 225261.

The product of its (nonzero) digits is 6000, while the sum is 29.

Adding to 21352450115 its reverse (51105425312), we get a palindrome (72457875427).

The spelling of 21352450115 in words is "twenty-one billion, three hundred fifty-two million, four hundred fifty thousand, one hundred fifteen".