12523013503 has 32 divisors (see below), whose sum is σ = 16879887360. Its totient is φ = 8972328960.

The previous prime is 12523013497. The next prime is 12523013509. The reversal of 12523013503 is 30531032521.

It is an interprime number because it is at equal distance from previous prime (12523013497) and next prime (12523013509).

It is not a de Polignac number, because 12523013503 - 2²¹ = 12520916351 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12523013509) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 232918 + ... + 281596.

It is an arithmetic number, because the mean of its divisors is an integer number (527496480).

Almost surely, 2^12523013503 is an apocalyptic number.

12523013503 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

12523013503 is a deficient number, since it is larger than the sum of its proper divisors (4356873857).

12523013503 is a wasteful number, since it uses less digits than its factorization.

12523013503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48967.

The product of its (nonzero) digits is 2700, while the sum is 25.

The spelling of 12523013503 in words is "twelve billion, five hundred twenty-three million, thirteen thousand, five hundred three".