12135165403 has 4 divisors (see below), whose sum is σ = 12848998680. Its totient is φ = 11421332128.

The previous prime is 12135165389. The next prime is 12135165409. The reversal of 12135165403 is 30456153121.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12135165403 - 2¹³ = 12135157211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12135165409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 356916613 + ... + 356916646.

It is an arithmetic number, because the mean of its divisors is an integer number (3212249670).

Almost surely, 2^12135165403 is an apocalyptic number.

12135165403 is a deficient number, since it is larger than the sum of its proper divisors (713833277).

12135165403 is an equidigital number, since it uses as much as digits as its factorization.

12135165403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 713833276.

The product of its (nonzero) digits is 10800, while the sum is 31.

The spelling of 12135165403 in words is "twelve billion, one hundred thirty-five million, one hundred sixty-five thousand, four hundred three".