7421561364241 has 2 divisors, whose sum is σ = 7421561364242. Its totient is φ = 7421561364240.

The previous prime is 7421561364157. The next prime is 7421561364263. The reversal of 7421561364241 is 1424631651247.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7084668183616 + 336893180625 = 2661704^2 + 580425^2 .

It is a cyclic number.

It is not a de Polignac number, because 7421561364241 - 2²³ = 7421552975633 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 7421561364191 and 7421561364200.

It is not a weakly prime, because it can be changed into another prime (7421561365241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3710780682120 + 3710780682121.

It is an arithmetic number, because the mean of its divisors is an integer number (3710780682121).

Almost surely, 2^{7421561364241} is an apocalyptic number.

It is an amenable number.

7421561364241 is a deficient number, since it is larger than the sum of its proper divisors (1).

7421561364241 is an equidigital number, since it uses as much as digits as its factorization.

7421561364241 is an evil number, because the sum of its binary digits is even.

The product of its digits is 967680, while the sum is 46.

The spelling of 7421561364241 in words is "seven trillion, four hundred twenty-one billion, five hundred sixty-one million, three hundred sixty-four thousand, two hundred forty-one".