78163736328 has 48 divisors (see below), whose sum is σ = 212696780400. Its totient is φ = 25931092320.

The previous prime is 78163736323. The next prime is 78163736341. The reversal of 78163736328 is 82363736187.

It is a super-2 number, since 2×78163736328² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (78163736323) 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 11 ways as a sum of consecutive naturals, for example, 2557338 + ... + 2587721.

It is an arithmetic number, because the mean of its divisors is an integer number (4431182925).

Almost surely, 2^78163736328 is an apocalyptic number.

It is an amenable number.

78163736328 is an abundant number, since it is smaller than the sum of its proper divisors (134533044072).

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

78163736328 is a wasteful number, since it uses less digits than its factorization.

78163736328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5145282 (or 5145275 counting only the distinct ones).

The product of its digits is 6096384, while the sum is 54.

The spelling of 78163736328 in words is "seventy-eight billion, one hundred sixty-three million, seven hundred thirty-six thousand, three hundred twenty-eight".