12400033040 has 40 divisors (see below), whose sum is σ = 29260389120. Its totient is φ = 4885981056.

The previous prime is 12400033027. The next prime is 12400033067. The reversal of 12400033040 is 4033000421.

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

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, 1151360 + ... + 1162079.

It is an arithmetic number, because the mean of its divisors is an integer number (731509728).

Almost surely, 2^12400033040 is an apocalyptic number.

12400033040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12400033040 is an abundant number, since it is smaller than the sum of its proper divisors (16860356080).

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

12400033040 is a wasteful number, since it uses less digits than its factorization.

12400033040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2313519 (or 2313513 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 17.

Adding to 12400033040 its reverse (4033000421), we get a palindrome (16433033461).

The spelling of 12400033040 in words is "twelve billion, four hundred million, thirty-three thousand, forty".