4778666667 has 12 divisors (see below), whose sum is σ = 6932146104. Its totient is φ = 3172103520.

The previous prime is 4778666653. The next prime is 4778666677. The reversal of 4778666667 is 7666668774.

It is not a de Polignac number, because 4778666667 - 2¹⁶ = 4778601131 is a prime.

It is a super-2 number, since 2×4778666667² = 45671310228593777778, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (4778666677) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1137309 + ... + 1141502.

It is an arithmetic number, because the mean of its divisors is an integer number (577678842).

Almost surely, 2^4778666667 is an apocalyptic number.

4778666667 is a deficient number, since it is larger than the sum of its proper divisors (2153479437).

4778666667 is a wasteful number, since it uses less digits than its factorization.

4778666667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2279050 (or 2279047 counting only the distinct ones).

The product of its digits is 85349376, while the sum is 63.

The square root of 4778666667 is about 69127.9007854282. The cubic root of 4778666667 is about 1684.3625594142.

The spelling of 4778666667 in words is "four billion, seven hundred seventy-eight million, six hundred sixty-six thousand, six hundred sixty-seven".