4997994771 has 16 divisors (see below), whose sum is σ = 8308355328. Its totient is φ = 2596360800.

The previous prime is 4997994697. The next prime is 4997994787. The reversal of 4997994771 is 1774997994.

It is not a de Polignac number, because 4997994771 - 2¹¹ = 4997992723 is a prime.

It is not an unprimeable number, because it can be changed into a prime (4997994571) 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 15 ways as a sum of consecutive naturals, for example, 10817940 + ... + 10818401.

It is an arithmetic number, because the mean of its divisors is an integer number (519272208).

Almost surely, 2^4997994771 is an apocalyptic number.

4997994771 is a deficient number, since it is larger than the sum of its proper divisors (3310360557).

4997994771 is a wasteful number, since it uses less digits than its factorization.

4997994771 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21636362.

The product of its digits is 36006768, while the sum is 66.

The square root of 4997994771 is about 70696.4975865141. The cubic root of 4997994771 is about 1709.7473232206.

The spelling of 4997994771 in words is "four billion, nine hundred ninety-seven million, nine hundred ninety-four thousand, seven hundred seventy-one".