7725746611691 has 2 divisors, whose sum is σ = 7725746611692. Its totient is φ = 7725746611690.

The previous prime is 7725746611651. The next prime is 7725746611703. The reversal of 7725746611691 is 1961166475277.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7725746611691 is a prime.

It is not a weakly prime, because it can be changed into another prime (7725746611651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3862873305845 + 3862873305846.

It is an arithmetic number, because the mean of its divisors is an integer number (3862873305846).

Almost surely, 2^{7725746611691} is an apocalyptic number.

7725746611691 is a deficient number, since it is larger than the sum of its proper divisors (1).

7725746611691 is an equidigital number, since it uses as much as digits as its factorization.

7725746611691 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 26671680, while the sum is 62.

The spelling of 7725746611691 in words is "seven trillion, seven hundred twenty-five billion, seven hundred forty-six million, six hundred eleven thousand, six hundred ninety-one".