78966611136 has 168 divisors, whose sum is σ = 259071591584. Its totient is φ = 22527590400.

The previous prime is 78966611093. The next prime is 78966611159. The reversal of 78966611136 is 63111666987.

It is a tau number, because it is divible by the number of its divisors (168).

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2698986 + ... + 2728086.

Almost surely, 2^78966611136 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 78966611136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (129535795792).

78966611136 is an abundant number, since it is smaller than the sum of its proper divisors (180104980448).

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

78966611136 is a wasteful number, since it uses less digits than its factorization.

78966611136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29799 (or 29786 counting only the distinct ones).

The product of its digits is 1959552, while the sum is 54.

The spelling of 78966611136 in words is "seventy-eight billion, nine hundred sixty-six million, six hundred eleven thousand, one hundred thirty-six".