12145031455 has 8 divisors (see below), whose sum is σ = 15431334192. Its totient is φ = 9144494208.

The previous prime is 12145031449. The next prime is 12145031467. The reversal of 12145031455 is 55413054121.

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

It is not a de Polignac number, because 12145031455 - 2³ = 12145031447 is a prime.

It is a Duffinian number.

It is a congruent number.

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, 71441277 + ... + 71441446.

It is an arithmetic number, because the mean of its divisors is an integer number (1928916774).

Almost surely, 2^12145031455 is an apocalyptic number.

12145031455 is a deficient number, since it is larger than the sum of its proper divisors (3286302737).

12145031455 is a wasteful number, since it uses less digits than its factorization.

12145031455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142882745.

The product of its (nonzero) digits is 12000, while the sum is 31.

Adding to 12145031455 its reverse (55413054121), we get a palindrome (67558085576).

The spelling of 12145031455 in words is "twelve billion, one hundred forty-five million, thirty-one thousand, four hundred fifty-five".