78690117443 has 8 divisors (see below), whose sum is σ = 90324278880. Its totient is φ = 67154135040.

The previous prime is 78690117439. The next prime is 78690117479. The reversal of 78690117443 is 34471109687.

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 78690117443 - 2² = 78690117439 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 78690117391 and 78690117400.

It is not an unprimeable number, because it can be changed into a prime (78690117643) 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, 24543038 + ... + 24546243.

It is an arithmetic number, because the mean of its divisors is an integer number (11290534860).

Almost surely, 2^78690117443 is an apocalyptic number.

78690117443 is a deficient number, since it is larger than the sum of its proper divisors (11634161437).

78690117443 is a wasteful number, since it uses less digits than its factorization.

78690117443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49089517.

The product of its (nonzero) digits is 1016064, while the sum is 50.

The spelling of 78690117443 in words is "seventy-eight billion, six hundred ninety million, one hundred seventeen thousand, four hundred forty-three".