4778521708 has 24 divisors (see below), whose sum is σ = 8462890800. Its totient is φ = 2360724288.

The previous prime is 4778521637. The next prime is 4778521757. The reversal of 4778521708 is 8071258774.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 91158 + ... + 133666.

It is an arithmetic number, because the mean of its divisors is an integer number (352620450).

Almost surely, 2^4778521708 is an apocalyptic number.

It is an amenable number.

4778521708 is a deficient number, since it is larger than the sum of its proper divisors (3684369092).

4778521708 is a wasteful number, since it uses less digits than its factorization.

4778521708 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42849 (or 42847 counting only the distinct ones).

The product of its (nonzero) digits is 878080, while the sum is 49.

The square root of 4778521708 is about 69126.8522934467. The cubic root of 4778521708 is about 1684.3455277470.

The spelling of 4778521708 in words is "four billion, seven hundred seventy-eight million, five hundred twenty-one thousand, seven hundred eight".