243211093749 has 32 divisors (see below), whose sum is σ = 388955414400. Its totient is φ = 149311071360.

The previous prime is 243211093729. The next prime is 243211093813. The reversal of 243211093749 is 947390112342.

243211093749 is a `hidden beast` number, since 243 + 21 + 10 + 9 + 374 + 9 = 666.

It is not a de Polignac number, because 243211093749 - 2⁷ = 243211093621 is a prime.

It is a super-2 number, since 2×243211093749² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243211093729) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 679792 + ... + 973929.

It is an arithmetic number, because the mean of its divisors is an integer number (12154856700).

Almost surely, 2^243211093749 is an apocalyptic number.

It is an amenable number.

243211093749 is a deficient number, since it is larger than the sum of its proper divisors (145744320651).

243211093749 is a wasteful number, since it uses less digits than its factorization.

243211093749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1654162 (or 1654156 counting only the distinct ones).

The product of its (nonzero) digits is 326592, while the sum is 45.

The spelling of 243211093749 in words is "two hundred forty-three billion, two hundred eleven million, ninety-three thousand, seven hundred forty-nine".