21453474346 has 8 divisors (see below), whose sum is σ = 32185339200. Its totient is φ = 10725027948.

The previous prime is 21453474307. The next prime is 21453474359. The reversal of 21453474346 is 64347435412.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 838866 + ... + 864061.

It is an arithmetic number, because the mean of its divisors is an integer number (4023167400).

Almost surely, 2^21453474346 is an apocalyptic number.

21453474346 is a deficient number, since it is larger than the sum of its proper divisors (10731864854).

21453474346 is a wasteful number, since it uses less digits than its factorization.

21453474346 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1709228.

The product of its digits is 967680, while the sum is 43.

The spelling of 21453474346 in words is "twenty-one billion, four hundred fifty-three million, four hundred seventy-four thousand, three hundred forty-six".