12463916521 has 8 divisors (see below), whose sum is σ = 14248509120. Its totient is φ = 10680332208.

The previous prime is 12463916519. The next prime is 12463916551. The reversal of 12463916521 is 12561936421.

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

It is not a de Polignac number, because 12463916521 - 2¹ = 12463916519 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12463916551) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 225391 + ... + 275188.

It is an arithmetic number, because the mean of its divisors is an integer number (1781063640).

Almost surely, 2^12463916521 is an apocalyptic number.

It is an amenable number.

12463916521 is a deficient number, since it is larger than the sum of its proper divisors (1784592599).

12463916521 is an equidigital number, since it uses as much as digits as its factorization.

12463916521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 504143.

The product of its digits is 77760, while the sum is 40.

The spelling of 12463916521 in words is "twelve billion, four hundred sixty-three million, nine hundred sixteen thousand, five hundred twenty-one".