21782418022 has 8 divisors (see below), whose sum is σ = 32678523072. Its totient is φ = 10889577000.

The previous prime is 21782418017. The next prime is 21782418071. The reversal of 21782418022 is 22081428712.

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

It is a congruent number.

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, 799254 + ... + 826057.

It is an arithmetic number, because the mean of its divisors is an integer number (4084815384).

Almost surely, 2^21782418022 is an apocalyptic number.

21782418022 is a deficient number, since it is larger than the sum of its proper divisors (10896105050).

21782418022 is a wasteful number, since it uses less digits than its factorization.

21782418022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1632014.

The product of its (nonzero) digits is 28672, while the sum is 37.

The spelling of 21782418022 in words is "twenty-one billion, seven hundred eighty-two million, four hundred eighteen thousand, twenty-two".