21325555326 has 8 divisors (see below), whose sum is σ = 42651110664. Its totient is φ = 7108518440.

The previous prime is 21325555319. The next prime is 21325555337. The reversal of 21325555326 is 62355552312.

It is a happy number.

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

21325555326 is an admirable number.

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, 1777129605 + ... + 1777129616.

It is an arithmetic number, because the mean of its divisors is an integer number (5331388833).

Almost surely, 2^21325555326 is an apocalyptic number.

21325555326 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21325555326 is a wasteful number, since it uses less digits than its factorization.

21325555326 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3554259226.

The product of its digits is 270000, while the sum is 39.

The spelling of 21325555326 in words is "twenty-one billion, three hundred twenty-five million, five hundred fifty-five thousand, three hundred twenty-six".