21425364466 has 8 divisors (see below), whose sum is σ = 35059687344. Its totient is φ = 9738802020.

The previous prime is 21425364437. The next prime is 21425364511. The reversal of 21425364466 is 66446352412.

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, 486940080 + ... + 486940123.

It is an arithmetic number, because the mean of its divisors is an integer number (4382460918).

Almost surely, 2^21425364466 is an apocalyptic number.

21425364466 is a deficient number, since it is larger than the sum of its proper divisors (13634322878).

21425364466 is a wasteful number, since it uses less digits than its factorization.

21425364466 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 973880216.

The product of its digits is 829440, while the sum is 43.

The spelling of 21425364466 in words is "twenty-one billion, four hundred twenty-five million, three hundred sixty-four thousand, four hundred sixty-six".