4986666778731 has 16 divisors (see below), whose sum is σ = 7635087891840. Its totient is φ = 2863157958720.

The previous prime is 4986666778721. The next prime is 4986666778757. The reversal of 4986666778731 is 1378776666894.

It is not a de Polignac number, because 4986666778731 - 2⁵ = 4986666778699 is a prime.

It is a super-2 number, since 2×4986666778731² (a number of 26 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (4986666778721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3976607650 + ... + 3976608903.

It is an arithmetic number, because the mean of its divisors is an integer number (477192993240).

Almost surely, 2^{4986666778731} is an apocalyptic number.

4986666778731 is a deficient number, since it is larger than the sum of its proper divisors (2648421113109).

4986666778731 is a wasteful number, since it uses less digits than its factorization.

4986666778731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7953216586.

The product of its digits is 3072577536, while the sum is 78.

The spelling of 4986666778731 in words is "four trillion, nine hundred eighty-six billion, six hundred sixty-six million, seven hundred seventy-eight thousand, seven hundred thirty-one".