12440436503 has 4 divisors (see below), whose sum is σ = 13571385288. Its totient is φ = 11309487720.

The previous prime is 12440436487. The next prime is 12440436509. The reversal of 12440436503 is 30563404421.

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 12440436503 - 2⁴ = 12440436487 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12440436503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12440436509) 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, 565474376 + ... + 565474397.

It is an arithmetic number, because the mean of its divisors is an integer number (3392846322).

Almost surely, 2^12440436503 is an apocalyptic number.

12440436503 is a deficient number, since it is larger than the sum of its proper divisors (1130948785).

12440436503 is a wasteful number, since it uses less digits than its factorization.

12440436503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1130948784.

The product of its (nonzero) digits is 34560, while the sum is 32.

The spelling of 12440436503 in words is "twelve billion, four hundred forty million, four hundred thirty-six thousand, five hundred three".