8443865785442 has 16 divisors (see below), whose sum is σ = 12712173268320. Its totient is φ = 4206478497312.

The previous prime is 8443865785427. The next prime is 8443865785457. The reversal of 8443865785442 is 2445875683448.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (8443865785427) and next prime (8443865785457).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3515534 + ... + 5408022.

It is an arithmetic number, because the mean of its divisors is an integer number (794510829270).

Almost surely, 2^{8443865785442} is an apocalyptic number.

8443865785442 is a deficient number, since it is larger than the sum of its proper divisors (4268307482878).

8443865785442 is a wasteful number, since it uses less digits than its factorization.

8443865785442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1900657.

The product of its digits is 825753600, while the sum is 68.

The spelling of 8443865785442 in words is "eight trillion, four hundred forty-three billion, eight hundred sixty-five million, seven hundred eighty-five thousand, four hundred forty-two".