12885273648440 has 32 divisors (see below), whose sum is σ = 28992081600000. Its totient is φ = 5154071078784.

The previous prime is 12885273648409. The next prime is 12885273648451. The reversal of 12885273648440 is 4484637258821.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4583561 + ... + 6839559.

It is an arithmetic number, because the mean of its divisors is an integer number (906002550000).

Almost surely, 2^{12885273648440} is an apocalyptic number.

12885273648440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12885273648440 is an abundant number, since it is smaller than the sum of its proper divisors (16106807951560).

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

12885273648440 is a wasteful number, since it uses less digits than its factorization.

12885273648440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2398799 (or 2398795 counting only the distinct ones).

The product of its (nonzero) digits is 82575360, while the sum is 62.

The spelling of 12885273648440 in words is "twelve trillion, eight hundred eighty-five billion, two hundred seventy-three million, six hundred forty-eight thousand, four hundred forty".