4986916561 has 8 divisors (see below), whose sum is σ = 5760288864. Its totient is φ = 4266880320.

The previous prime is 4986916547. The next prime is 4986916609. The reversal of 4986916561 is 1656196894.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 4986916561 - 2⁹ = 4986916049 is a prime.

It is not an unprimeable number, because it can be changed into a prime (4986910561) 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 7 ways as a sum of consecutive naturals, for example, 13333815 + ... + 13334188.

It is an arithmetic number, because the mean of its divisors is an integer number (720036108).

Almost surely, 2^4986916561 is an apocalyptic number.

It is an amenable number.

4986916561 is a deficient number, since it is larger than the sum of its proper divisors (773372303).

4986916561 is a wasteful number, since it uses less digits than its factorization.

4986916561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26668031.

The product of its digits is 2799360, while the sum is 55.

The square root of 4986916561 is about 70618.1036349745. The cubic root of 4986916561 is about 1708.4831527941.

It can be divided in two parts, 49869 and 16561, that added together give a triangular number (66430 = T₃₆₄).

The spelling of 4986916561 in words is "four billion, nine hundred eighty-six million, nine hundred sixteen thousand, five hundred sixty-one".