12949800440 has 16 divisors (see below), whose sum is σ = 29137051080. Its totient is φ = 5179920160.

The previous prime is 12949800343. The next prime is 12949800497. The reversal of 12949800440 is 4400894921.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 161872466 + ... + 161872545.

Almost surely, 2^12949800440 is an apocalyptic number.

12949800440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12949800440 is an abundant number, since it is smaller than the sum of its proper divisors (16187250640).

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

12949800440 is a wasteful number, since it uses less digits than its factorization.

12949800440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 323745022 (or 323745018 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 41.

The spelling of 12949800440 in words is "twelve billion, nine hundred forty-nine million, eight hundred thousand, four hundred forty".