12655533003440 has 40 divisors (see below), whose sum is σ = 29467835181888. Its totient is φ = 5054691317760.

The previous prime is 12655533003389. The next prime is 12655533003461. The reversal of 12655533003440 is 4430033555621.

It is a tau number, because it is divible by the number of its divisors (40).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 117475256 + ... + 117582935.

Almost surely, 2^{12655533003440} is an apocalyptic number.

12655533003440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12655533003440 is an abundant number, since it is smaller than the sum of its proper divisors (16812302178448).

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

12655533003440 is a wasteful number, since it uses less digits than its factorization.

12655533003440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 235058877 (or 235058871 counting only the distinct ones).

The product of its (nonzero) digits is 648000, while the sum is 41.

The spelling of 12655533003440 in words is "twelve trillion, six hundred fifty-five billion, five hundred thirty-three million, three thousand, four hundred forty".