78663860160 has 56 divisors (see below), whose sum is σ = 249757759056. Its totient is φ = 20977029120.

The previous prime is 78663860153. The next prime is 78663860179. The reversal of 78663860160 is 6106836687.

It is a happy number.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40969801 + ... + 40971720.

Almost surely, 2^78663860160 is an apocalyptic number.

It is an amenable number.

78663860160 is an abundant number, since it is smaller than the sum of its proper divisors (171093898896).

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

78663860160 is a wasteful number, since it uses less digits than its factorization.

78663860160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81941541 (or 81941531 counting only the distinct ones).

The product of its (nonzero) digits is 1741824, while the sum is 51.

The spelling of 78663860160 in words is "seventy-eight billion, six hundred sixty-three million, eight hundred sixty thousand, one hundred sixty".