78321947104 has 24 divisors (see below), whose sum is σ = 160900523280. Its totient is φ = 37458322176.

The previous prime is 78321947089. The next prime is 78321947107. The reversal of 78321947104 is 40174912387.

It is a super-3 number, since 3×78321947104³ (a number of 34 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Harshad number since it is a multiple of its sum of digits (46).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78321947107) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53207109 + ... + 53208580.

It is an arithmetic number, because the mean of its divisors is an integer number (6704188470).

Almost surely, 2^78321947104 is an apocalyptic number.

It is an amenable number.

78321947104 is an abundant number, since it is smaller than the sum of its proper divisors (82578576176).

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

78321947104 is a wasteful number, since it uses less digits than its factorization.

78321947104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106415722 (or 106415714 counting only the distinct ones).

The product of its (nonzero) digits is 338688, while the sum is 46.

The spelling of 78321947104 in words is "seventy-eight billion, three hundred twenty-one million, nine hundred forty-seven thousand, one hundred four".