4540864721 has 4 divisors (see below), whose sum is σ = 4637478912. Its totient is φ = 4444250532.

The previous prime is 4540864673. The next prime is 4540864733. The reversal of 4540864721 is 1274680454.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 4540864721 - 2¹⁰ = 4540863697 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4540864121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48307025 + ... + 48307118.

It is an arithmetic number, because the mean of its divisors is an integer number (1159369728).

Almost surely, 2^4540864721 is an apocalyptic number.

It is an amenable number.

4540864721 is a deficient number, since it is larger than the sum of its proper divisors (96614191).

4540864721 is an equidigital number, since it uses as much as digits as its factorization.

4540864721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96614190.

The product of its (nonzero) digits is 215040, while the sum is 41.

The square root of 4540864721 is about 67385.9385999780. The cubic root of 4540864721 is about 1655.9460667291.

The spelling of 4540864721 in words is "four billion, five hundred forty million, eight hundred sixty-four thousand, seven hundred twenty-one".