78265813164 has 96 divisors (see below), whose sum is σ = 228862588416. Its totient is φ = 20223406080.

The previous prime is 78265813163. The next prime is 78265813201. The reversal of 78265813164 is 46131856287.

It is a super-2 number, since 2×78265813164² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (78265813163) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 41107 + ... + 397770.

It is an arithmetic number, because the mean of its divisors is an integer number (2383985296).

Almost surely, 2^78265813164 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 78265813164, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (114431294208).

78265813164 is an abundant number, since it is smaller than the sum of its proper divisors (150596775252).

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

78265813164 is a wasteful number, since it uses less digits than its factorization.

78265813164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 439095 (or 439093 counting only the distinct ones).

The product of its digits is 1935360, while the sum is 51.

The spelling of 78265813164 in words is "seventy-eight billion, two hundred sixty-five million, eight hundred thirteen thousand, one hundred sixty-four".