12145430545 has 8 divisors (see below), whose sum is σ = 14821542720. Its totient is φ = 9551660400.

The previous prime is 12145430527. The next prime is 12145430603. The reversal of 12145430545 is 54503454121.

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

It is not a de Polignac number, because 12145430545 - 2⁷ = 12145430417 is a prime.

It is a super-2 number, since 2×12145430545² (a number of 21 digits) contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a self number, because there is not a number n which added to its sum of digits gives 12145430545.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20585181 + ... + 20585770.

It is an arithmetic number, because the mean of its divisors is an integer number (1852692840).

Almost surely, 2^12145430545 is an apocalyptic number.

It is an amenable number.

12145430545 is a deficient number, since it is larger than the sum of its proper divisors (2676112175).

12145430545 is an equidigital number, since it uses as much as digits as its factorization.

12145430545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41171015.

The product of its (nonzero) digits is 48000, while the sum is 34.

Adding to 12145430545 its reverse (54503454121), we get a palindrome (66648884666).

The spelling of 12145430545 in words is "twelve billion, one hundred forty-five million, four hundred thirty thousand, five hundred forty-five".