11647589761 has 2 divisors, whose sum is σ = 11647589762. Its totient is φ = 11647589760.

The previous prime is 11647589747. The next prime is 11647589801. The reversal of 11647589761 is 16798574611.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6906441025 + 4741148736 = 83105^2 + 68856^2 .

It is a cyclic number.

It is not a de Polignac number, because 11647589761 - 2³³ = 3057655169 is a prime.

It is not a weakly prime, because it can be changed into another prime (11647589861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5823794880 + 5823794881.

It is an arithmetic number, because the mean of its divisors is an integer number (5823794881).

Almost surely, 2^11647589761 is an apocalyptic number.

It is an amenable number.

11647589761 is a deficient number, since it is larger than the sum of its proper divisors (1).

11647589761 is an equidigital number, since it uses as much as digits as its factorization.

11647589761 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2540160, while the sum is 55.

The spelling of 11647589761 in words is "eleven billion, six hundred forty-seven million, five hundred eighty-nine thousand, seven hundred sixty-one".