21284397362 has 8 divisors (see below), whose sum is σ = 31927481856. Its totient is φ = 10641903412.

The previous prime is 21284397361. The next prime is 21284397377. The reversal of 21284397362 is 26379348212.

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

It is not an unprimeable number, because it can be changed into a prime (21284397361) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42578 + ... + 210669.

It is an arithmetic number, because the mean of its divisors is an integer number (3990935232).

Almost surely, 2^21284397362 is an apocalyptic number.

21284397362 is a deficient number, since it is larger than the sum of its proper divisors (10643084494).

21284397362 is a wasteful number, since it uses less digits than its factorization.

21284397362 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 295272.

The product of its digits is 870912, while the sum is 47.

The spelling of 21284397362 in words is "twenty-one billion, two hundred eighty-four million, three hundred ninety-seven thousand, three hundred sixty-two".