12810215448 has 56 divisors (see below), whose sum is σ = 36012273300. Its totient is φ = 4270069872.

The previous prime is 12810215417. The next prime is 12810215471. The reversal of 12810215448 is 84451201821.

12810215448 is a `hidden beast` number, since 1 + 2 + 8 + 102 + 1 + 544 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 1092438 + ... + 1104101.

Almost surely, 2^12810215448 is an apocalyptic number.

12810215448 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

12810215448 is an abundant number, since it is smaller than the sum of its proper divisors (23202057852).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12810215448 is an equidigital number, since it uses as much as digits as its factorization.

12810215448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2196563 (or 2196544 counting only the distinct ones).

The product of its (nonzero) digits is 20480, while the sum is 36.

The spelling of 12810215448 in words is "twelve billion, eight hundred ten million, two hundred fifteen thousand, four hundred forty-eight".