78609040379 has 8 divisors (see below), whose sum is σ = 78712845120. Its totient is φ = 78505303816.

The previous prime is 78609040361. The next prime is 78609040387. The reversal of 78609040379 is 97304090687.

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 78609040379 - 2⁸ = 78609040123 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 78609040379.

It is not an unprimeable number, because it can be changed into a prime (78609040339) 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, 2536592 + ... + 2567394.

It is an arithmetic number, because the mean of its divisors is an integer number (9839105640).

Almost surely, 2^78609040379 is an apocalyptic number.

78609040379 is a deficient number, since it is larger than the sum of its proper divisors (103804741).

78609040379 is a wasteful number, since it uses less digits than its factorization.

78609040379 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34089.

The product of its (nonzero) digits is 2286144, while the sum is 53.

The spelling of 78609040379 in words is "seventy-eight billion, six hundred nine million, forty thousand, three hundred seventy-nine".