22851549921 has 8 divisors (see below), whose sum is σ = 30469747104. Its totient is φ = 15233859680.

The previous prime is 22851549911. The next prime is 22851549937. The reversal of 22851549921 is 12994515822.

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

It is a cyclic number.

It is not a de Polignac number, because 22851549921 - 2¹⁰ = 22851548897 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22851549911) 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, 4791 + ... + 213836.

It is an arithmetic number, because the mean of its divisors is an integer number (3808718388).

Almost surely, 2^22851549921 is an apocalyptic number.

It is an amenable number.

22851549921 is a deficient number, since it is larger than the sum of its proper divisors (7618197183).

22851549921 is a wasteful number, since it uses less digits than its factorization.

22851549921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 253471.

The product of its digits is 518400, while the sum is 48.

The spelling of 22851549921 in words is "twenty-two billion, eight hundred fifty-one million, five hundred forty-nine thousand, nine hundred twenty-one".