4513078721 has 4 divisors (see below), whose sum is σ = 4750609200. Its totient is φ = 4275548244.

The previous prime is 4513078711. The next prime is 4513078729. The reversal of 4513078721 is 1278703154.

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 4513078721 - 2¹⁰ = 4513077697 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4513078729) 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 3 ways as a sum of consecutive naturals, for example, 118765211 + ... + 118765248.

It is an arithmetic number, because the mean of its divisors is an integer number (1187652300).

Almost surely, 2^4513078721 is an apocalyptic number.

It is an amenable number.

4513078721 is a deficient number, since it is larger than the sum of its proper divisors (237530479).

4513078721 is a wasteful number, since it uses less digits than its factorization.

4513078721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 237530478.

The product of its (nonzero) digits is 47040, while the sum is 38.

The square root of 4513078721 is about 67179.4516277113. The cubic root of 4513078721 is about 1652.5615213107.

The spelling of 4513078721 in words is "four billion, five hundred thirteen million, seventy-eight thousand, seven hundred twenty-one".