12451521145 has 16 divisors (see below), whose sum is σ = 17086013568. Its totient is φ = 8533365120.

The previous prime is 12451521119. The next prime is 12451521149. The reversal of 12451521145 is 54112515421.

12451521145 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12451521145 - 2⁹ = 12451520633 is a prime.

It is a super-2 number, since 2×12451521145² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12451521149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36996 + ... + 162085.

It is an arithmetic number, because the mean of its divisors is an integer number (1067875848).

Almost surely, 2^12451521145 is an apocalyptic number.

It is an amenable number.

12451521145 is a deficient number, since it is larger than the sum of its proper divisors (4634492423).

12451521145 is a wasteful number, since it uses less digits than its factorization.

12451521145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200880.

The product of its digits is 8000, while the sum is 31.

The spelling of 12451521145 in words is "twelve billion, four hundred fifty-one million, five hundred twenty-one thousand, one hundred forty-five".