12162154503 has 4 divisors (see below), whose sum is σ = 16216206008. Its totient is φ = 8108103000.

The previous prime is 12162154493. The next prime is 12162154519. The reversal of 12162154503 is 30545126121.

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

It is not a de Polignac number, because 12162154503 - 2¹⁸ = 12161892359 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12162154583) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2027025748 + ... + 2027025753.

It is an arithmetic number, because the mean of its divisors is an integer number (4054051502).

Almost surely, 2^12162154503 is an apocalyptic number.

12162154503 is a deficient number, since it is larger than the sum of its proper divisors (4054051505).

12162154503 is an equidigital number, since it uses as much as digits as its factorization.

12162154503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4054051504.

The product of its (nonzero) digits is 7200, while the sum is 30.

The spelling of 12162154503 in words is "twelve billion, one hundred sixty-two million, one hundred fifty-four thousand, five hundred three".