4756991321 has 8 divisors (see below), whose sum is σ = 4910116800. Its totient is φ = 4605158448.

The previous prime is 4756991311. The next prime is 4756991329. The reversal of 4756991321 is 1231996574.

4756991321 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 4756991321 - 2¹⁸ = 4756729177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4756991329) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 315671 + ... + 330396.

It is an arithmetic number, because the mean of its divisors is an integer number (613764600).

Almost surely, 2^4756991321 is an apocalyptic number.

It is an amenable number.

4756991321 is a deficient number, since it is larger than the sum of its proper divisors (153125479).

4756991321 is a wasteful number, since it uses less digits than its factorization.

4756991321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 646303.

The product of its digits is 408240, while the sum is 47.

The square root of 4756991321 is about 68970.9454843125. The cubic root of 4756991321 is about 1681.8120236400.

The spelling of 4756991321 in words is "four billion, seven hundred fifty-six million, nine hundred ninety-one thousand, three hundred twenty-one".