12638071040 has 72 divisors (see below), whose sum is σ = 34596744000. Its totient is φ = 4333049856.

The previous prime is 12638071021. The next prime is 12638071067. The reversal of 12638071040 is 4017083621.

It is a super-2 number, since 2×12638071040² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a junction number, because it is equal to n+sod(n) for n = 12638070988 and 12638071006.

It is an unprimeable number.

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, 696290 + ... + 714209.

Almost surely, 2^12638071040 is an apocalyptic number.

12638071040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12638071040 is an abundant number, since it is smaller than the sum of its proper divisors (21958672960).

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

12638071040 is an equidigital number, since it uses as much as digits as its factorization.

12638071040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1410527 (or 1410513 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 32.

The spelling of 12638071040 in words is "twelve billion, six hundred thirty-eight million, seventy-one thousand, forty".