78127696116 has 18 divisors (see below), whose sum is σ = 197489454162. Its totient is φ = 26042565360.

The previous prime is 78127696081. The next prime is 78127696147. The reversal of 78127696116 is 61169672187.

78127696116 is a `hidden beast` number, since 7 + 8 + 12 + 7 + 6 + 9 + 611 + 6 = 666.

It can be written as a sum of positive squares in only one way, i.e., 70837951716 + 7289744400 = 266154^2 + 85380^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-2 number, since 2×78127696116² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1085106855 + ... + 1085106926.

Almost surely, 2^78127696116 is an apocalyptic number.

It is an amenable number.

78127696116 is an abundant number, since it is smaller than the sum of its proper divisors (119361758046).

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

78127696116 is a wasteful number, since it uses less digits than its factorization.

78127696116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2170213791 (or 2170213786 counting only the distinct ones).

The product of its digits is 1524096, while the sum is 54.

The spelling of 78127696116 in words is "seventy-eight billion, one hundred twenty-seven million, six hundred ninety-six thousand, one hundred sixteen".