12816554340 has 48 divisors (see below), whose sum is σ = 36563462208. Its totient is φ = 3353261184.

The previous prime is 12816554327. The next prime is 12816554351. The reversal of 12816554340 is 4345561821.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2012002 + ... + 2018361.

It is an arithmetic number, because the mean of its divisors is an integer number (761738796).

Almost surely, 2^12816554340 is an apocalyptic number.

12816554340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12816554340 is an abundant number, since it is smaller than the sum of its proper divisors (23746907868).

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

12816554340 is a wasteful number, since it uses less digits than its factorization.

12816554340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4030428 (or 4030426 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 39.

The spelling of 12816554340 in words is "twelve billion, eight hundred sixteen million, five hundred fifty-four thousand, three hundred forty".