78511101696 has 162 divisors, whose sum is σ = 229826170392. Its totient is φ = 25776368640.

The previous prime is 78511101661. The next prime is 78511101719. The reversal of 78511101696 is 69610111587.

78511101696 is a `hidden beast` number, since 78 + 511 + 1 + 0 + 1 + 69 + 6 = 666.

It is a congruent number.

It is an unprimeable number.

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 17 ways as a sum of consecutive naturals, for example, 10338861 + ... + 10346451.

Almost surely, 2^78511101696 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 78511101696, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (114913085196).

78511101696 is an abundant number, since it is smaller than the sum of its proper divisors (151315068696).

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

78511101696 is an equidigital number, since it uses as much as digits as its factorization.

78511101696 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7747 (or 7663 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 45.

The spelling of 78511101696 in words is "seventy-eight billion, five hundred eleven million, one hundred one thousand, six hundred ninety-six".