78564830778582 has 32 divisors (see below), whose sum is σ = 161395185270528. Its totient is φ = 25481987713056.

The previous prime is 78564830778541. The next prime is 78564830778617. The reversal of 78564830778582 is 28587703846587.

It is a junction number, because it is equal to n+sod(n) for n = 78564830778498 and 78564830778507.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 578857713 + ... + 578993420.

It is an arithmetic number, because the mean of its divisors is an integer number (5043599539704).

Almost surely, 2^{78564830778582} is an apocalyptic number.

78564830778582 is an abundant number, since it is smaller than the sum of its proper divisors (82830354491946).

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

78564830778582 is a wasteful number, since it uses less digits than its factorization.

78564830778582 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1157851444.

The product of its (nonzero) digits is 5057740800, while the sum is 78.

The spelling of 78564830778582 in words is "seventy-eight trillion, five hundred sixty-four billion, eight hundred thirty million, seven hundred seventy-eight thousand, five hundred eighty-two".