4863556721 has 2 divisors, whose sum is σ = 4863556722. Its totient is φ = 4863556720.

The previous prime is 4863556681. The next prime is 4863556739. The reversal of 4863556721 is 1276553684.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3628737121 + 1234819600 = 60239^2 + 35140^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4863556721 is a prime.

It is not a weakly prime, because it can be changed into another prime (4863556751) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2431778360 + 2431778361.

It is an arithmetic number, because the mean of its divisors is an integer number (2431778361).

Almost surely, 2^4863556721 is an apocalyptic number.

It is an amenable number.

4863556721 is a deficient number, since it is larger than the sum of its proper divisors (1).

4863556721 is an equidigital number, since it uses as much as digits as its factorization.

4863556721 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1209600, while the sum is 47.

The square root of 4863556721 is about 69739.2050499574. The cubic root of 4863556721 is about 1694.2779614244.

The spelling of 4863556721 in words is "four billion, eight hundred sixty-three million, five hundred fifty-six thousand, seven hundred twenty-one".