4521768961 has 8 divisors (see below), whose sum is σ = 4566111264. Its totient is φ = 4477465440.

The previous prime is 4521768959. The next prime is 4521768967. The reversal of 4521768961 is 1698671254.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 4521768961 - 2¹ = 4521768959 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4521768967) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 261366 + ... + 278128.

It is an arithmetic number, because the mean of its divisors is an integer number (570763908).

Almost surely, 2^4521768961 is an apocalyptic number.

It is an amenable number.

4521768961 is a deficient number, since it is larger than the sum of its proper divisors (44342303).

4521768961 is a wasteful number, since it uses less digits than its factorization.

4521768961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19391.

The product of its digits is 725760, while the sum is 49.

The square root of 4521768961 is about 67244.0998229584. The cubic root of 4521768961 is about 1653.6215477491.

The spelling of 4521768961 in words is "four billion, five hundred twenty-one million, seven hundred sixty-eight thousand, nine hundred sixty-one".