11918356850400 has 1728 divisors, whose sum is σ = 52568875376640. Its totient is φ = 2277526118400.

The previous prime is 11918356850353. The next prime is 11918356850429. The reversal of 11918356850400 is 405865381911.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 287 ways as a sum of consecutive naturals, for example, 11212000269 + ... + 11212001331.

It is an arithmetic number, because the mean of its divisors is an integer number (30421802880).

Almost surely, 2^{11918356850400} is an apocalyptic number.

11918356850400 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 11918356850400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26284437688320).

11918356850400 is an abundant number, since it is smaller than the sum of its proper divisors (40650518526240).

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

11918356850400 is a wasteful number, since it uses less digits than its factorization.

11918356850400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1489 (or 1463 counting only the distinct ones).

The product of its (nonzero) digits is 1036800, while the sum is 51.

The spelling of 11918356850400 in words is "eleven trillion, nine hundred eighteen billion, three hundred fifty-six million, eight hundred fifty thousand, four hundred".