4561503600421 has 2 divisors, whose sum is σ = 4561503600422. Its totient is φ = 4561503600420.

The previous prime is 4561503600389. The next prime is 4561503600461. The reversal of 4561503600421 is 1240063051654.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4472848537921 + 88655062500 = 2114911^2 + 297750^2 .

It is a cyclic number.

It is not a de Polignac number, because 4561503600421 - 2⁵ = 4561503600389 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4561503600461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2280751800210 + 2280751800211.

It is an arithmetic number, because the mean of its divisors is an integer number (2280751800211).

Almost surely, 2^{4561503600421} is an apocalyptic number.

It is an amenable number.

4561503600421 is a deficient number, since it is larger than the sum of its proper divisors (1).

4561503600421 is an equidigital number, since it uses as much as digits as its factorization.

4561503600421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 86400, while the sum is 37.

The spelling of 4561503600421 in words is "four trillion, five hundred sixty-one billion, five hundred three million, six hundred thousand, four hundred twenty-one".