78283439843 has 8 divisors (see below), whose sum is σ = 92352814080. Its totient is φ = 64935572040.

The previous prime is 78283439813. The next prime is 78283439849. The reversal of 78283439843 is 34893438287.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 78283439843 - 2¹⁰ = 78283438819 is a prime.

It is a super-2 number, since 2×78283439843² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78283439849) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 180376373 + ... + 180376806.

It is an arithmetic number, because the mean of its divisors is an integer number (11544101760).

Almost surely, 2^78283439843 is an apocalyptic number.

78283439843 is a deficient number, since it is larger than the sum of its proper divisors (14069374237).

78283439843 is a wasteful number, since it uses less digits than its factorization.

78283439843 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 360753217.

The product of its digits is 27869184, while the sum is 59.

The spelling of 78283439843 in words is "seventy-eight billion, two hundred eighty-three million, four hundred thirty-nine thousand, eight hundred forty-three".