12738265408 has 56 divisors (see below), whose sum is σ = 27589093920. Its totient is φ = 5787256320.

The previous prime is 12738265387. The next prime is 12738265409. The reversal of 12738265408 is 80456283721.

It is a hoax number, since the sum of its digits (46) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12738265409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2167498 + ... + 2173366.

Almost surely, 2^12738265408 is an apocalyptic number.

It is an amenable number.

12738265408 is an abundant number, since it is smaller than the sum of its proper divisors (14850828512).

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

12738265408 is a wasteful number, since it uses less digits than its factorization.

12738265408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8975 (or 8965 counting only the distinct ones).

The product of its (nonzero) digits is 645120, while the sum is 46.

The spelling of 12738265408 in words is "twelve billion, seven hundred thirty-eight million, two hundred sixty-five thousand, four hundred eight".