21365350466 has 8 divisors (see below), whose sum is σ = 32050287360. Its totient is φ = 10681921348.

The previous prime is 21365350441. The next prime is 21365350477. The reversal of 21365350466 is 66405356312.

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, 340826 + ... + 398613.

It is an arithmetic number, because the mean of its divisors is an integer number (4006285920).

Almost surely, 2^21365350466 is an apocalyptic number.

21365350466 is a deficient number, since it is larger than the sum of its proper divisors (10684936894).

21365350466 is a wasteful number, since it uses less digits than its factorization.

21365350466 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 753888.

The product of its (nonzero) digits is 388800, while the sum is 41.

The spelling of 21365350466 in words is "twenty-one billion, three hundred sixty-five million, three hundred fifty thousand, four hundred sixty-six".