7451444516261 has 2 divisors, whose sum is σ = 7451444516262. Its totient is φ = 7451444516260.

The previous prime is 7451444516239. The next prime is 7451444516273. The reversal of 7451444516261 is 1626154441547.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5055666807361 + 2395777708900 = 2248481^2 + 1547830^2 .

It is a cyclic number.

It is not a de Polignac number, because 7451444516261 - 2¹⁸ = 7451444254117 is a prime.

It is a super-2 number, since 2×7451444516261² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7451444516231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3725722258130 + 3725722258131.

It is an arithmetic number, because the mean of its divisors is an integer number (3725722258131).

Almost surely, 2^{7451444516261} is an apocalyptic number.

It is an amenable number.

7451444516261 is a deficient number, since it is larger than the sum of its proper divisors (1).

7451444516261 is an equidigital number, since it uses as much as digits as its factorization.

7451444516261 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3225600, while the sum is 50.

The spelling of 7451444516261 in words is "seven trillion, four hundred fifty-one billion, four hundred forty-four million, five hundred sixteen thousand, two hundred sixty-one".