78878363302580 has 12 divisors (see below), whose sum is σ = 165644562935460. Its totient is φ = 31551345321024.

The previous prime is 78878363302549. The next prime is 78878363302591. The reversal of 78878363302580 is 8520336387887.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 48546864483364 + 30331498819216 = 6967558^2 + 5507404^2 .

It is a hoax number, since the sum of its digits (68) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 78878363302580.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1971959082545 + ... + 1971959082584.

It is an arithmetic number, because the mean of its divisors is an integer number (13803713577955).

Almost surely, 2^{78878363302580} is an apocalyptic number.

It is an amenable number.

78878363302580 is an abundant number, since it is smaller than the sum of its proper divisors (86766199632880).

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

78878363302580 is a wasteful number, since it uses less digits than its factorization.

78878363302580 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3943918165138 (or 3943918165136 counting only the distinct ones).

The product of its (nonzero) digits is 325140480, while the sum is 68.

The spelling of 78878363302580 in words is "seventy-eight trillion, eight hundred seventy-eight billion, three hundred sixty-three million, three hundred two thousand, five hundred eighty".