12554550321 has 8 divisors (see below), whose sum is σ = 16758800640. Its totient is φ = 8360000112.

The previous prime is 12554550317. The next prime is 12554550353. The reversal of 12554550321 is 12305545521.

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

It is not a de Polignac number, because 12554550321 - 2² = 12554550317 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12554550301) 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, 2422006 + ... + 2427183.

It is an arithmetic number, because the mean of its divisors is an integer number (2094850080).

Almost surely, 2^12554550321 is an apocalyptic number.

It is an amenable number.

12554550321 is a deficient number, since it is larger than the sum of its proper divisors (4204250319).

12554550321 is an equidigital number, since it uses as much as digits as its factorization.

12554550321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4850055.

The product of its (nonzero) digits is 30000, while the sum is 33.

The spelling of 12554550321 in words is "twelve billion, five hundred fifty-four million, five hundred fifty thousand, three hundred twenty-one".