21064625422 has 8 divisors (see below), whose sum is σ = 31623696072. Its totient is φ = 10523393400.

The previous prime is 21064625419. The next prime is 21064625423. The reversal of 21064625422 is 22452646012.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21064625423) 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, 4456704 + ... + 4461427.

It is an arithmetic number, because the mean of its divisors is an integer number (3952962009).

Almost surely, 2^21064625422 is an apocalyptic number.

21064625422 is a deficient number, since it is larger than the sum of its proper divisors (10559070650).

21064625422 is a wasteful number, since it uses less digits than its factorization.

21064625422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8919314.

The product of its (nonzero) digits is 46080, while the sum is 34.

The spelling of 21064625422 in words is "twenty-one billion, sixty-four million, six hundred twenty-five thousand, four hundred twenty-two".