7245200716421 has 2 divisors, whose sum is σ = 7245200716422. Its totient is φ = 7245200716420.

The previous prime is 7245200716373. The next prime is 7245200716441. The reversal of 7245200716421 is 1246170025427.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7044061024225 + 201139692196 = 2654065^2 + 448486^2 .

It is a cyclic number.

It is not a de Polignac number, because 7245200716421 - 2¹⁰ = 7245200715397 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7245200716441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3622600358210 + 3622600358211.

It is an arithmetic number, because the mean of its divisors is an integer number (3622600358211).

Almost surely, 2^{7245200716421} is an apocalyptic number.

It is an amenable number.

7245200716421 is a deficient number, since it is larger than the sum of its proper divisors (1).

7245200716421 is an equidigital number, since it uses as much as digits as its factorization.

7245200716421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 188160, while the sum is 41.

The spelling of 7245200716421 in words is "seven trillion, two hundred forty-five billion, two hundred million, seven hundred sixteen thousand, four hundred twenty-one".