12145033251 has 48 divisors (see below), whose sum is σ = 19211512320. Its totient is φ = 7348017600.

The previous prime is 12145033249. The next prime is 12145033259. The reversal of 12145033251 is 15233054121.

12145033251 is a `hidden beast` number, since 121 + 4 + 503 + 32 + 5 + 1 = 666.

It is not a de Polignac number, because 12145033251 - 2¹ = 12145033249 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12145033259) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5164726 + ... + 5167076.

It is an arithmetic number, because the mean of its divisors is an integer number (400239840).

Almost surely, 2^12145033251 is an apocalyptic number.

12145033251 is a deficient number, since it is larger than the sum of its proper divisors (7066479069).

12145033251 is a wasteful number, since it uses less digits than its factorization.

12145033251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3096 (or 3093 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

Adding to 12145033251 its reverse (15233054121), we get a palindrome (27378087372).

The spelling of 12145033251 in words is "twelve billion, one hundred forty-five million, thirty-three thousand, two hundred fifty-one".