78030053280 has 72 divisors (see below), whose sum is σ = 266277561732. Its totient is φ = 20808013824.

The previous prime is 78030053267. The next prime is 78030053281. The reversal of 78030053280 is 8235003087.

78030053280 is a `hidden beast` number, since 78 + 0 + 300 + 5 + 3 + 280 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 67228192656 + 10801860624 = 259284^2 + 103932^2 .

It is a tau number, because it is divible by the number of its divisors (72).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (78030053281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 27092329 + ... + 27095208.

Almost surely, 2^78030053280 is an apocalyptic number.

It is an amenable number.

78030053280 is an abundant number, since it is smaller than the sum of its proper divisors (188247508452).

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

78030053280 is a wasteful number, since it uses less digits than its factorization.

78030053280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54187558 (or 54187547 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 36.

The spelling of 78030053280 in words is "seventy-eight billion, thirty million, fifty-three thousand, two hundred eighty".