7245777761 has 2 divisors, whose sum is σ = 7245777762. Its totient is φ = 7245777760.

The previous prime is 7245777739. The next prime is 7245777829. The reversal of 7245777761 is 1677775427.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5331190225 + 1914587536 = 73015^2 + 43756^2 .

It is a cyclic number.

It is not a de Polignac number, because 7245777761 - 2²² = 7241583457 is a prime.

It is not a weakly prime, because it can be changed into another prime (7245773761) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3622888880 + 3622888881.

It is an arithmetic number, because the mean of its divisors is an integer number (3622888881).

Almost surely, 2^7245777761 is an apocalyptic number.

It is an amenable number.

7245777761 is a deficient number, since it is larger than the sum of its proper divisors (1).

7245777761 is an equidigital number, since it uses as much as digits as its factorization.

7245777761 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4033680, while the sum is 53.

The square root of 7245777761 is about 85122.1343776106. The cubic root of 7245777761 is about 1935.0625285876.

The spelling of 7245777761 in words is "seven billion, two hundred forty-five million, seven hundred seventy-seven thousand, seven hundred sixty-one".