78841542580 has 48 divisors (see below), whose sum is σ = 166671714384. Its totient is φ = 31326566400.

The previous prime is 78841542541. The next prime is 78841542599. The reversal of 78841542580 is 8524514887.

It can be written as a sum of positive squares in 8 ways, for example, as 5912379664 + 72929162916 = 76892^2 + 270054^2 .

It is a Smith number, since the sum of its digits (52) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4145974 + ... + 4164946.

It is an arithmetic number, because the mean of its divisors is an integer number (3472327383).

Almost surely, 2^78841542580 is an apocalyptic number.

It is an amenable number.

78841542580 is an abundant number, since it is smaller than the sum of its proper divisors (87830171804).

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

78841542580 is a wasteful number, since it uses less digits than its factorization.

78841542580 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20356 (or 20354 counting only the distinct ones).

The product of its (nonzero) digits is 2867200, while the sum is 52.

The spelling of 78841542580 in words is "seventy-eight billion, eight hundred forty-one million, five hundred forty-two thousand, five hundred eighty".