7566413761 has 2 divisors, whose sum is σ = 7566413762. Its totient is φ = 7566413760.

The previous prime is 7566413741. The next prime is 7566413779. The reversal of 7566413761 is 1673146657.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6784652161 + 781761600 = 82369^2 + 27960^2 .

It is a cyclic number.

It is not a de Polignac number, because 7566413761 - 2²¹ = 7564316609 is a prime.

It is not a weakly prime, because it can be changed into another prime (7566413711) 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, 3783206880 + 3783206881.

It is an arithmetic number, because the mean of its divisors is an integer number (3783206881).

Almost surely, 2^7566413761 is an apocalyptic number.

It is an amenable number.

7566413761 is a deficient number, since it is larger than the sum of its proper divisors (1).

7566413761 is an equidigital number, since it uses as much as digits as its factorization.

7566413761 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 635040, while the sum is 46.

The square root of 7566413761 is about 86985.1352875881. The cubic root of 7566413761 is about 1963.1946513872.

The spelling of 7566413761 in words is "seven billion, five hundred sixty-six million, four hundred thirteen thousand, seven hundred sixty-one".