4389945768243 has 16 divisors (see below), whose sum is σ = 7432712412160. Its totient is φ = 2508540438888.

The previous prime is 4389945768223. The next prime is 4389945768259. The reversal of 4389945768243 is 3428675499834.

4389945768243 is a `hidden beast` number, since 4 + 3 + 8 + 9 + 9 + 4 + 576 + 8 + 2 + 43 = 666.

It is not a de Polignac number, because 4389945768243 - 2⁵ = 4389945768211 is a prime.

It is a super-2 number, since 2×4389945768243² (a number of 26 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (4389945768223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11613612955 + ... + 11613613332.

It is an arithmetic number, because the mean of its divisors is an integer number (464544525760).

Almost surely, 2^{4389945768243} is an apocalyptic number.

4389945768243 is a deficient number, since it is larger than the sum of its proper divisors (3042766643917).

4389945768243 is a wasteful number, since it uses less digits than its factorization.

4389945768243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23227226303 (or 23227226297 counting only the distinct ones).

The product of its digits is 1254113280, while the sum is 72.

The spelling of 4389945768243 in words is "four trillion, three hundred eighty-nine billion, nine hundred forty-five million, seven hundred sixty-eight thousand, two hundred forty-three".