78803756388 has 48 divisors (see below), whose sum is σ = 233492613760. Its totient is φ = 22515358752.

The previous prime is 78803756387. The next prime is 78803756407. The reversal of 78803756388 is 88365730887.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is not an unprimeable number, because it can be changed into a prime (78803756387) 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, 52118131 + ... + 52119642.

Almost surely, 2^78803756388 is an apocalyptic number.

It is an amenable number.

78803756388 is an abundant number, since it is smaller than the sum of its proper divisors (154688857372).

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

78803756388 is a wasteful number, since it uses less digits than its factorization.

78803756388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104237793 (or 104237785 counting only the distinct ones).

The product of its (nonzero) digits is 54190080, while the sum is 63.

The spelling of 78803756388 in words is "seventy-eight billion, eight hundred three million, seven hundred fifty-six thousand, three hundred eighty-eight".