243214550040 has 256 divisors, whose sum is σ = 910108016640. Its totient is φ = 50514624000.

The previous prime is 243214550039. The next prime is 243214550071. The reversal of 243214550040 is 40055412342.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 25784125 + ... + 25793555.

It is an arithmetic number, because the mean of its divisors is an integer number (3555109440).

Almost surely, 2^243214550040 is an apocalyptic number.

243214550040 is a gapful number since it is divisible by the number (20) 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 243214550040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (455054008320).

243214550040 is an abundant number, since it is smaller than the sum of its proper divisors (666893466600).

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

243214550040 is a wasteful number, since it uses less digits than its factorization.

243214550040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12254 (or 12250 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 30.

Adding to 243214550040 its reverse (40055412342), we get a palindrome (283269962382).

The spelling of 243214550040 in words is "two hundred forty-three billion, two hundred fourteen million, five hundred fifty thousand, forty".