78506864005080 has 64 divisors (see below), whose sum is σ = 269166390877440. Its totient is φ = 17944426058112.

The previous prime is 78506864005057. The next prime is 78506864005201. The reversal of 78506864005080 is 8050046860587.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 78506864005080.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 46730275354 + ... + 46730277033.

It is an arithmetic number, because the mean of its divisors is an integer number (4205724857460).

Almost surely, 2^{78506864005080} is an apocalyptic number.

78506864005080 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

78506864005080 is an abundant number, since it is smaller than the sum of its proper divisors (190659526872360).

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

78506864005080 is a wasteful number, since it uses less digits than its factorization.

78506864005080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93460552408 (or 93460552404 counting only the distinct ones).

The product of its (nonzero) digits is 12902400, while the sum is 57.

The spelling of 78506864005080 in words is "seventy-eight trillion, five hundred six billion, eight hundred sixty-four million, five thousand, eighty".