78650964028 has 48 divisors (see below), whose sum is σ = 169557922240. Its totient is φ = 31086042624.

The previous prime is 78650964023. The next prime is 78650964043. The reversal of 78650964028 is 82046905687.

It is a self number, because there is not a number n which added to its sum of digits gives 78650964028.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78650964023) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 299008 + ... + 496696.

Almost surely, 2^78650964028 is an apocalyptic number.

It is an amenable number.

78650964028 is an abundant number, since it is smaller than the sum of its proper divisors (90906958212).

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

78650964028 is a wasteful number, since it uses less digits than its factorization.

78650964028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198806 (or 198804 counting only the distinct ones).

The product of its (nonzero) digits is 5806080, while the sum is 55.

The spelling of 78650964028 in words is "seventy-eight billion, six hundred fifty million, nine hundred sixty-four thousand, twenty-eight".