78955830912 has 768 divisors, whose sum is σ = 271481241600. Its totient is φ = 20191223808.

The previous prime is 78955830907. The next prime is 78955830917. The reversal of 78955830912 is 21903855987.

It is an interprime number because it is at equal distance from previous prime (78955830907) and next prime (78955830917).

It is a super-4 number, since 4×78955830912⁴ (a number of 45 digits) contains 4444 as substring. Note that it is a super-d number also for d = 3.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is not an unprimeable number, because it can be changed into a prime (78955830917) 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 95 ways as a sum of consecutive naturals, for example, 621699393 + ... + 621699519.

It is an arithmetic number, because the mean of its divisors is an integer number (353491200).

Almost surely, 2^78955830912 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 78955830912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (135740620800).

78955830912 is an abundant number, since it is smaller than the sum of its proper divisors (192525410688).

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

78955830912 is a wasteful number, since it uses less digits than its factorization.

78955830912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 261 (or 242 counting only the distinct ones).

The product of its (nonzero) digits is 5443200, while the sum is 57.

The spelling of 78955830912 in words is "seventy-eight billion, nine hundred fifty-five million, eight hundred thirty thousand, nine hundred twelve".