21114513505 has 8 divisors (see below), whose sum is σ = 25369615872. Its totient is φ = 16870144368.

The previous prime is 21114513461. The next prime is 21114513527. The reversal of 21114513505 is 50531541112.

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 21114513505 - 2¹⁷ = 21114382433 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2678977 + ... + 2686846.

It is an arithmetic number, because the mean of its divisors is an integer number (3171201984).

Almost surely, 2^21114513505 is an apocalyptic number.

It is an amenable number.

21114513505 is a deficient number, since it is larger than the sum of its proper divisors (4255102367).

21114513505 is an equidigital number, since it uses as much as digits as its factorization.

21114513505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5366615.

The product of its (nonzero) digits is 3000, while the sum is 28.

The spelling of 21114513505 in words is "twenty-one billion, one hundred fourteen million, five hundred thirteen thousand, five hundred five".