65630403691 has 2 divisors, whose sum is σ = 65630403692. Its totient is φ = 65630403690.

The previous prime is 65630403613. The next prime is 65630403697. The reversal of 65630403691 is 19630403656.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 65630403691 - 2⁷ = 65630403563 is a prime.

It is not a weakly prime, because it can be changed into another prime (65630403697) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32815201845 + 32815201846.

It is an arithmetic number, because the mean of its divisors is an integer number (32815201846).

Almost surely, 2^65630403691 is an apocalyptic number.

65630403691 is a deficient number, since it is larger than the sum of its proper divisors (1).

65630403691 is an equidigital number, since it uses as much as digits as its factorization.

65630403691 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 349920, while the sum is 43.

The spelling of 65630403691 in words is "sixty-five billion, six hundred thirty million, four hundred three thousand, six hundred ninety-one".