21842284834 has 8 divisors (see below), whose sum is σ = 34187924160. Its totient is φ = 10446310116.

The previous prime is 21842284829. The next prime is 21842284883. The reversal of 21842284834 is 43848224812.

It is a happy number.

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

It is a Harshad number since it is a multiple of its sum of digits (46), and also a Moran number because the ratio is a prime number: 474832279 = 21842284834 / (2 + 1 + 8 + 4 + 2 + 2 + 8 + 4 + 8 + 3 + 4).

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, 237416094 + ... + 237416185.

It is an arithmetic number, because the mean of its divisors is an integer number (4273490520).

Almost surely, 2^21842284834 is an apocalyptic number.

21842284834 is a deficient number, since it is larger than the sum of its proper divisors (12345639326).

21842284834 is a wasteful number, since it uses less digits than its factorization.

21842284834 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 474832304.

The product of its digits is 786432, while the sum is 46.

The spelling of 21842284834 in words is "twenty-one billion, eight hundred forty-two million, two hundred eighty-four thousand, eight hundred thirty-four".