5207666778 has 24 divisors (see below), whose sum is σ = 11284749216. Its totient is φ = 1735662600.

The previous prime is 5207666743. The next prime is 5207666837. The reversal of 5207666778 is 8776667025.

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, 179293 + ... + 206303.

It is an arithmetic number, because the mean of its divisors is an integer number (470197884).

Almost surely, 2^5207666778 is an apocalyptic number.

5207666778 is an abundant number, since it is smaller than the sum of its proper divisors (6077082438).

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

5207666778 is a wasteful number, since it uses less digits than its factorization.

5207666778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37730 (or 37727 counting only the distinct ones).

The product of its (nonzero) digits is 5927040, while the sum is 54.

The square root of 5207666778 is about 72164.1654701279. The cubic root of 5207666778 is about 1733.3292365370.

The spelling of 5207666778 in words is "five billion, two hundred seven million, six hundred sixty-six thousand, seven hundred seventy-eight".