5277791665278 has 24 divisors (see below), whose sum is σ = 12474780300216. Its totient is φ = 1599330807600.

The previous prime is 5277791665253. The next prime is 5277791665291. The reversal of 5277791665278 is 8725661977725.

5277791665278 is a `hidden beast` number, since 5 + 2 + 7 + 7 + 7 + 91 + 6 + 6 + 527 + 8 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13327756533 + ... + 13327756928.

It is an arithmetic number, because the mean of its divisors is an integer number (519782512509).

Almost surely, 2^{5277791665278} is an apocalyptic number.

5277791665278 is an abundant number, since it is smaller than the sum of its proper divisors (7196988634938).

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

5277791665278 is a wasteful number, since it uses less digits than its factorization.

5277791665278 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26655513480 (or 26655513477 counting only the distinct ones).

The product of its digits is 622339200, while the sum is 72.

The spelling of 5277791665278 in words is "five trillion, two hundred seventy-seven billion, seven hundred ninety-one million, six hundred sixty-five thousand, two hundred seventy-eight".