4461037621 has 2 divisors, whose sum is σ = 4461037622. Its totient is φ = 4461037620.

The previous prime is 4461037591. The next prime is 4461037631. The reversal of 4461037621 is 1267301644.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2706600625 + 1754436996 = 52025^2 + 41886^2 .

It is a cyclic number.

It is not a de Polignac number, because 4461037621 - 2⁹ = 4461037109 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4461037631) 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 as a sum of consecutive naturals, namely, 2230518810 + 2230518811.

It is an arithmetic number, because the mean of its divisors is an integer number (2230518811).

Almost surely, 2^4461037621 is an apocalyptic number.

It is an amenable number.

4461037621 is a deficient number, since it is larger than the sum of its proper divisors (1).

4461037621 is an equidigital number, since it uses as much as digits as its factorization.

4461037621 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24192, while the sum is 34.

The square root of 4461037621 is about 66790.9995508377. Note that the first 3 decimals coincide. The cubic root of 4461037621 is about 1646.1849564085.

The spelling of 4461037621 in words is "four billion, four hundred sixty-one million, thirty-seven thousand, six hundred twenty-one".