12453533145 has 24 divisors (see below), whose sum is σ = 21589960392. Its totient is φ = 6640704000.

The previous prime is 12453533129. The next prime is 12453533161. The reversal of 12453533145 is 54133535421.

12453533145 is a `hidden beast` number, since 12 + 453 + 53 + 3 + 145 = 666.

It is an interprime number because it is at equal distance from previous prime (12453533129) and next prime (12453533161).

It can be written as a sum of positive squares in 4 ways, for example, as 7262618841 + 5190914304 = 85221^2 + 72048^2 .

It is not a de Polignac number, because 12453533145 - 2⁴ = 12453533129 is a prime.

It is a super-2 number, since 2×12453533145² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 270295 + ... + 312995.

It is an arithmetic number, because the mean of its divisors is an integer number (899581683).

Almost surely, 2^12453533145 is an apocalyptic number.

12453533145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12453533145 is a deficient number, since it is larger than the sum of its proper divisors (9136427247).

12453533145 is a wasteful number, since it uses less digits than its factorization.

12453533145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49193 (or 49190 counting only the distinct ones).

The product of its digits is 108000, while the sum is 36.

The spelling of 12453533145 in words is "twelve billion, four hundred fifty-three million, five hundred thirty-three thousand, one hundred forty-five".