4864043521 has 4 divisors (see below), whose sum is σ = 4864339012. Its totient is φ = 4863748032.

The previous prime is 4864043501. The next prime is 4864043549. The reversal of 4864043521 is 1253404684.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 22667121 + 4841376400 = 4761^2 + 69580^2 .

It is a cyclic number.

It is not a de Polignac number, because 4864043521 - 2²⁹ = 4327172609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4864043501) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 121500 + ... + 156493.

It is an arithmetic number, because the mean of its divisors is an integer number (1216084753).

Almost surely, 2^4864043521 is an apocalyptic number.

It is an amenable number.

4864043521 is a deficient number, since it is larger than the sum of its proper divisors (295491).

4864043521 is a wasteful number, since it uses less digits than its factorization.

4864043521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 295490.

The product of its (nonzero) digits is 92160, while the sum is 37.

The square root of 4864043521 is about 69742.6951085201. The cubic root of 4864043521 is about 1694.3344870662.

The spelling of 4864043521 in words is "four billion, eight hundred sixty-four million, forty-three thousand, five hundred twenty-one".