78788348758155 has 32 divisors (see below), whose sum is σ = 126681292919808. Its totient is φ = 41814074534400.

The previous prime is 78788348758139. The next prime is 78788348758169. The reversal of 78788348758155 is 55185784388787.

It is not a de Polignac number, because 78788348758155 - 2⁴ = 78788348758139 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3612931 + ... + 13062540.

It is an arithmetic number, because the mean of its divisors is an integer number (3958790403744).

Almost surely, 2^{78788348758155} is an apocalyptic number.

78788348758155 is a deficient number, since it is larger than the sum of its proper divisors (47892944161653).

78788348758155 is a wasteful number, since it uses less digits than its factorization.

78788348758155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16677027.

The product of its digits is 16859136000, while the sum is 84.

The spelling of 78788348758155 in words is "seventy-eight trillion, seven hundred eighty-eight billion, three hundred forty-eight million, seven hundred fifty-eight thousand, one hundred fifty-five".