243374551388 has 48 divisors (see below), whose sum is σ = 438027222528. Its totient is φ = 118248240000.

The previous prime is 243374551373. The next prime is 243374551391. The reversal of 243374551388 is 883155473342.

It is a happy number.

It is a super-3 number, since 3×243374551388³ (a number of 35 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 103518413 + ... + 103520763.

It is an arithmetic number, because the mean of its divisors is an integer number (9125567136).

Almost surely, 2^243374551388 is an apocalyptic number.

It is an amenable number.

243374551388 is a deficient number, since it is larger than the sum of its proper divisors (194652671140).

243374551388 is a wasteful number, since it uses less digits than its factorization.

243374551388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4634 (or 4632 counting only the distinct ones).

The product of its digits is 9676800, while the sum is 53.

The spelling of 243374551388 in words is "two hundred forty-three billion, three hundred seventy-four million, five hundred fifty-one thousand, three hundred eighty-eight".