3912445623543 has 4 divisors (see below), whose sum is σ = 5216594164728. Its totient is φ = 2608297082360.

The previous prime is 3912445623529. The next prime is 3912445623551. The reversal of 3912445623543 is 3453265442193.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3912445623543 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3912445623743) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 652074270588 + ... + 652074270593.

It is an arithmetic number, because the mean of its divisors is an integer number (1304148541182).

Almost surely, 2^{3912445623543} is an apocalyptic number.

3912445623543 is a deficient number, since it is larger than the sum of its proper divisors (1304148541185).

3912445623543 is a wasteful number, since it uses less digits than its factorization.

3912445623543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1304148541184.

The product of its digits is 9331200, while the sum is 51.

The spelling of 3912445623543 in words is "three trillion, nine hundred twelve billion, four hundred forty-five million, six hundred twenty-three thousand, five hundred forty-three".