78657141216 has 96 divisors (see below), whose sum is σ = 213218611200. Its totient is φ = 25363376640.

The previous prime is 78657141193. The next prime is 78657141223. The reversal of 78657141216 is 61214175687.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14249305 + ... + 14254823.

It is an arithmetic number, because the mean of its divisors is an integer number (2221027200).

Almost surely, 2^78657141216 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 78657141216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (106609305600).

78657141216 is an abundant number, since it is smaller than the sum of its proper divisors (134561469984).

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

78657141216 is a wasteful number, since it uses less digits than its factorization.

78657141216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10352 (or 10344 counting only the distinct ones).

The product of its digits is 564480, while the sum is 48.

The spelling of 78657141216 in words is "seventy-eight billion, six hundred fifty-seven million, one hundred forty-one thousand, two hundred sixteen".