78023069620 has 24 divisors (see below), whose sum is σ = 164407668264. Its totient is φ = 31102709376.

The previous prime is 78023069599. The next prime is 78023069651. The reversal of 78023069620 is 2696032087.

It can be written as a sum of positive squares in 4 ways, for example, as 5077702564 + 72945367056 = 71258^2 + 270084^2 .

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 6651399 + ... + 6663118.

It is an arithmetic number, because the mean of its divisors is an integer number (6850319511).

Almost surely, 2^78023069620 is an apocalyptic number.

It is an amenable number.

78023069620 is an abundant number, since it is smaller than the sum of its proper divisors (86384598644).

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

78023069620 is a wasteful number, since it uses less digits than its factorization.

78023069620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13314819 (or 13314817 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 43.

The spelling of 78023069620 in words is "seventy-eight billion, twenty-three million, sixty-nine thousand, six hundred twenty".