12463940400 has 120 divisors (see below), whose sum is σ = 40074530304. Its totient is φ = 3311366400.

The previous prime is 12463940381. The next prime is 12463940413. The reversal of 12463940400 is 404936421.

It is a tau number, because it is divible by the number of its divisors (120).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 306037 + ... + 344363.

Almost surely, 2^12463940400 is an apocalyptic number.

12463940400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12463940400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20037265152).

12463940400 is an abundant number, since it is smaller than the sum of its proper divisors (27610589904).

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

12463940400 is a wasteful number, since it uses less digits than its factorization.

12463940400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38619 (or 38608 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 33.

The spelling of 12463940400 in words is "twelve billion, four hundred sixty-three million, nine hundred forty thousand, four hundred".