12145551403 has 8 divisors (see below), whose sum is σ = 12301791680. Its totient is φ = 11989373760.

The previous prime is 12145551361. The next prime is 12145551437. The reversal of 12145551403 is 30415554121.

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

It is a cyclic number.

It is not a de Polignac number, because 12145551403 - 2⁹ = 12145550891 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12145551493) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 471001 + ... + 496117.

It is an arithmetic number, because the mean of its divisors is an integer number (1537723960).

Almost surely, 2^12145551403 is an apocalyptic number.

12145551403 is a deficient number, since it is larger than the sum of its proper divisors (156240277).

12145551403 is an equidigital number, since it uses as much as digits as its factorization.

12145551403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31317.

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

The spelling of 12145551403 in words is "twelve billion, one hundred forty-five million, five hundred fifty-one thousand, four hundred three".