78006389960 has 64 divisors (see below), whose sum is σ = 181235059200. Its totient is φ = 30186201600.

The previous prime is 78006389947. The next prime is 78006389963. The reversal of 78006389960 is 6998360087.

It is a junction number, because it is equal to n+sod(n) for n = 78006389896 and 78006389905.

It is not an unprimeable number, because it can be changed into a prime (78006389963) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4665215 + ... + 4681905.

It is an arithmetic number, because the mean of its divisors is an integer number (2831797800).

Almost surely, 2^78006389960 is an apocalyptic number.

It is an amenable number.

78006389960 is an abundant number, since it is smaller than the sum of its proper divisors (103228669240).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

78006389960 is a wasteful number, since it uses less digits than its factorization.

78006389960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20502 (or 20498 counting only the distinct ones).

The product of its (nonzero) digits is 3919104, while the sum is 56.

The spelling of 78006389960 in words is "seventy-eight billion, six million, three hundred eighty-nine thousand, nine hundred sixty".