78330330828 has 24 divisors (see below), whose sum is σ = 203078635760. Its totient is φ = 26110110240.

The previous prime is 78330330821. The next prime is 78330330833. The reversal of 78330330828 is 82803303387.

78330330828 is a `hidden beast` number, since 7 + 8 + 330 + 3 + 308 + 2 + 8 = 666.

It is a super-2 number, since 2×78330330828² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (78330330821) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 362640313 + ... + 362640528.

Almost surely, 2^78330330828 is an apocalyptic number.

It is an amenable number.

78330330828 is an abundant number, since it is smaller than the sum of its proper divisors (124748304932).

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

78330330828 is a wasteful number, since it uses less digits than its factorization.

78330330828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 725280854 (or 725280846 counting only the distinct ones).

The product of its (nonzero) digits is 580608, while the sum is 45.

The spelling of 78330330828 in words is "seventy-eight billion, three hundred thirty million, three hundred thirty thousand, eight hundred twenty-eight".