4721768481 has 4 divisors (see below), whose sum is σ = 6295691312. Its totient is φ = 3147845652.

The previous prime is 4721768477. The next prime is 4721768497. The reversal of 4721768481 is 1848671274.

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 not a de Polignac number, because 4721768481 - 2² = 4721768477 is a prime.

It is a super-2 number, since 2×4721768481² = 44590195176330094722, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 4721768481.

It is not an unprimeable number, because it can be changed into a prime (4721768881) 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, 786961411 + ... + 786961416.

It is an arithmetic number, because the mean of its divisors is an integer number (1573922828).

Almost surely, 2^4721768481 is an apocalyptic number.

It is an amenable number.

4721768481 is a deficient number, since it is larger than the sum of its proper divisors (1573922831).

4721768481 is a wasteful number, since it uses less digits than its factorization.

4721768481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1573922830.

The product of its digits is 602112, while the sum is 48.

The square root of 4721768481 is about 68715.1255619896. The cubic root of 4721768481 is about 1677.6507793631.

The spelling of 4721768481 in words is "four billion, seven hundred twenty-one million, seven hundred sixty-eight thousand, four hundred eighty-one".