78203678328 has 96 divisors (see below), whose sum is σ = 212632374240. Its totient is φ = 25965838080.

The previous prime is 78203678323. The next prime is 78203678369. The reversal of 78203678328 is 82387630287.

It is a super-2 number, since 2×78203678328² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78203678323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 32843698 + ... + 32846078.

It is an arithmetic number, because the mean of its divisors is an integer number (2214920565).

Almost surely, 2^78203678328 is an apocalyptic number.

It is an amenable number.

78203678328 is an abundant number, since it is smaller than the sum of its proper divisors (134428695912).

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

78203678328 is a wasteful number, since it uses less digits than its factorization.

78203678328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3989 (or 3982 counting only the distinct ones).

The product of its (nonzero) digits is 5419008, while the sum is 54.

The spelling of 78203678328 in words is "seventy-eight billion, two hundred three million, six hundred seventy-eight thousand, three hundred twenty-eight".