12551022055 has 48 divisors (see below), whose sum is σ = 18877283712. Its totient is φ = 7930137600.

The previous prime is 12551022041. The next prime is 12551022059. The reversal of 12551022055 is 55022015521.

It is not a de Polignac number, because 12551022055 - 2⁷ = 12551021927 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12551022059) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 86770 + ... + 180640.

It is an arithmetic number, because the mean of its divisors is an integer number (393276744).

Almost surely, 2^12551022055 is an apocalyptic number.

12551022055 is a deficient number, since it is larger than the sum of its proper divisors (6326261657).

12551022055 is a wasteful number, since it uses less digits than its factorization.

12551022055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93928 (or 93917 counting only the distinct ones).

The product of its (nonzero) digits is 5000, while the sum is 28.

Adding to 12551022055 its reverse (55022015521), we get a palindrome (67573037576).

The spelling of 12551022055 in words is "twelve billion, five hundred fifty-one million, twenty-two thousand, fifty-five".