12550999108440 has 256 divisors, whose sum is σ = 41650969046400. Its totient is φ = 3005568958464.

The previous prime is 12550999108433. The next prime is 12550999108441. The reversal of 12550999108440 is 4480199905521.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12550999108441) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 803050546 + ... + 803066174.

Almost surely, 2^{12550999108440} is an apocalyptic number.

12550999108440 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 12550999108440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20825484523200).

12550999108440 is an abundant number, since it is smaller than the sum of its proper divisors (29099969937960).

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

12550999108440 is a wasteful number, since it uses less digits than its factorization.

12550999108440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29606 (or 29602 counting only the distinct ones).

The product of its (nonzero) digits is 4665600, while the sum is 57.

The spelling of 12550999108440 in words is "twelve trillion, five hundred fifty billion, nine hundred ninety-nine million, one hundred eight thousand, four hundred forty".