21820925326 has 16 divisors (see below), whose sum is σ = 34500015360. Its totient is φ = 10322451000.

The previous prime is 21820925323. The next prime is 21820925333. The reversal of 21820925326 is 62352902812.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21820925323) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 353776 + ... + 410851.

It is an arithmetic number, because the mean of its divisors is an integer number (2156250960).

Almost surely, 2^21820925326 is an apocalyptic number.

21820925326 is a deficient number, since it is larger than the sum of its proper divisors (12679090034).

21820925326 is a wasteful number, since it uses less digits than its factorization.

21820925326 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 765399.

The product of its (nonzero) digits is 103680, while the sum is 40.

The spelling of 21820925326 in words is "twenty-one billion, eight hundred twenty million, nine hundred twenty-five thousand, three hundred twenty-six".