78878363618727 has 12 divisors (see below), whose sum is σ = 117014749633080. Its totient is φ = 51164343968688.

The previous prime is 78878363618689. The next prime is 78878363618749. The reversal of 78878363618727 is 72781636387887.

78878363618727 is a `hidden beast` number, since 7 + 8 + 8 + 78 + 363 + 6 + 187 + 2 + 7 = 666.

It is not a de Polignac number, because 78878363618727 - 2²⁸ = 78878095183271 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78878363618227) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 118435981077 + ... + 118435981742.

It is an arithmetic number, because the mean of its divisors is an integer number (9751229136090).

Almost surely, 2^{78878363618727} is an apocalyptic number.

78878363618727 is a deficient number, since it is larger than the sum of its proper divisors (38136386014353).

78878363618727 is a wasteful number, since it uses less digits than its factorization.

78878363618727 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 236871962862 (or 236871962859 counting only the distinct ones).

The product of its digits is 6372753408, while the sum is 81.

The spelling of 78878363618727 in words is "seventy-eight trillion, eight hundred seventy-eight billion, three hundred sixty-three million, six hundred eighteen thousand, seven hundred twenty-seven".